420199668

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:235

約数の個数: 216

約数和(自身を含む): 1331366400

約数和(自身を除く): 911166732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 31, 36, 38, 42, 57, 62, 63, 76, 84, 93, 114, 124, 126, 133, 149, 171, 186, 217, 228, 252, 266, 279, 298, 342, 361, 372, 399, 434, 447, 532, 558, 589, 596, 651, 684, 722, 798, 868, 894, 1043, 1083, 1116, 1178, 1197, 1302, 1341, 1444, 1596, 1767, 1788, 1953, 2086, 2166, 2356, 2394, 2527, 2604, 2682, 2831, 3129, 3249, 3534, 3906, 4123, 4172, 4332, 4619, 4788, 5054, 5301, 5364, 5662, 6258, 6498, 7068, 7581, 7812, 8246, 8493, 9238, 9387, 10108, 10602, 11191, 11324, 12369, 12516, 12996, 13857, 15162, 16492, 16986, 18476, 18774, 19817, 21204, 22382, 22743, 24738, 25479, 27714, 30324, 32333, 33573, 33972, 37107, 37548, 39634, 41571, 44764, 45486, 49476, 50958, 53789, 55428, 59451, 64666, 67146, 74214, 78337, 79268, 83142, 87761, 90972, 96999, 100719, 101916, 107578, 118902, 129332, 134292, 148428, 156674, 161367, 166284, 175522, 178353, 193998, 201438, 215156, 235011, 237804, 263283, 290997, 313348, 322734, 351044, 356706, 376523, 387996, 402876, 470022, 484101, 526566, 581994, 614327, 645468, 705033, 713412, 753046, 789849, 940044, 968202, 1053132, 1129569, 1163988, 1228654, 1410066, 1506092, 1579698, 1667459, 1842981, 1936404, 2259138, 2457308, 2820132, 3159396, 3334918, 3388707, 3685962, 4518276, 5002377, 5528943, 6669836, 6777414, 7371924, 10004754, 11057886, 11672213, 13554828, 15007131, 20009508, 22115772, 23344426, 30014262, 35016639, 46688852, 60028524, 70033278, 105049917, 140066556, 210099834, 420199668]

約数ペア:

[(1, 420199668), (2, 210099834), (3, 140066556), (4, 105049917), (6, 70033278), (7, 60028524), (9, 46688852), (12, 35016639), (14, 30014262), (18, 23344426), (19, 22115772), (21, 20009508), (28, 15007131), (31, 13554828), (36, 11672213), (38, 11057886), (42, 10004754), (57, 7371924), (62, 6777414), (63, 6669836), (76, 5528943), (84, 5002377), (93, 4518276), (114, 3685962), (124, 3388707), (126, 3334918), (133, 3159396), (149, 2820132), (171, 2457308), (186, 2259138), (217, 1936404), (228, 1842981), (252, 1667459), (266, 1579698), (279, 1506092), (298, 1410066), (342, 1228654), (361, 1163988), (372, 1129569), (399, 1053132), (434, 968202), (447, 940044), (532, 789849), (558, 753046), (589, 713412), (596, 705033), (651, 645468), (684, 614327), (722, 581994), (798, 526566), (868, 484101), (894, 470022), (1043, 402876), (1083, 387996), (1116, 376523), (1178, 356706), (1197, 351044), (1302, 322734), (1341, 313348), (1444, 290997), (1596, 263283), (1767, 237804), (1788, 235011), (1953, 215156), (2086, 201438), (2166, 193998), (2356, 178353), (2394, 175522), (2527, 166284), (2604, 161367), (2682, 156674), (2831, 148428), (3129, 134292), (3249, 129332), (3534, 118902), (3906, 107578), (4123, 101916), (4172, 100719), (4332, 96999), (4619, 90972), (4788, 87761), (5054, 83142), (5301, 79268), (5364, 78337), (5662, 74214), (6258, 67146), (6498, 64666), (7068, 59451), (7581, 55428), (7812, 53789), (8246, 50958), (8493, 49476), (9238, 45486), (9387, 44764), (10108, 41571), (10602, 39634), (11191, 37548), (11324, 37107), (12369, 33972), (12516, 33573), (12996, 32333), (13857, 30324), (15162, 27714), (16492, 25479), (16986, 24738), (18476, 22743), (18774, 22382), (19817, 21204)]