281639204

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{149}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 691286400

約数和(自身を除く): 409647196

約数列:

[1, 2, 4, 7, 11, 14, 17, 19, 22, 28, 34, 38, 44, 68, 76, 77, 119, 133, 149, 154, 187, 209, 238, 266, 298, 308, 323, 361, 374, 418, 476, 532, 596, 646, 722, 748, 836, 1043, 1292, 1309, 1444, 1463, 1639, 2086, 2261, 2527, 2533, 2618, 2831, 2926, 3278, 3553, 3971, 4172, 4522, 5054, 5066, 5236, 5662, 5852, 6137, 6556, 7106, 7942, 9044, 10108, 10132, 11324, 11473, 12274, 14212, 15884, 17731, 19817, 22946, 24548, 24871, 27797, 27863, 31141, 35462, 39634, 42959, 45892, 48127, 49742, 53789, 55594, 55726, 62282, 67507, 70924, 79268, 85918, 96254, 99484, 107578, 111188, 111452, 124564, 135014, 171836, 192508, 195041, 215156, 217987, 270028, 336889, 376523, 390082, 435974, 472549, 529397, 591679, 673778, 753046, 780164, 871948, 914413, 945098, 1058794, 1183358, 1347556, 1506092, 1828826, 1890196, 2117588, 2366716, 3657652, 3705779, 4141753, 6400891, 7411558, 8283506, 10058543, 12801782, 14823116, 16567012, 20117086, 25603564, 40234172, 70409801, 140819602, 281639204]

約数ペア:

[(1, 281639204), (2, 140819602), (4, 70409801), (7, 40234172), (11, 25603564), (14, 20117086), (17, 16567012), (19, 14823116), (22, 12801782), (28, 10058543), (34, 8283506), (38, 7411558), (44, 6400891), (68, 4141753), (76, 3705779), (77, 3657652), (119, 2366716), (133, 2117588), (149, 1890196), (154, 1828826), (187, 1506092), (209, 1347556), (238, 1183358), (266, 1058794), (298, 945098), (308, 914413), (323, 871948), (361, 780164), (374, 753046), (418, 673778), (476, 591679), (532, 529397), (596, 472549), (646, 435974), (722, 390082), (748, 376523), (836, 336889), (1043, 270028), (1292, 217987), (1309, 215156), (1444, 195041), (1463, 192508), (1639, 171836), (2086, 135014), (2261, 124564), (2527, 111452), (2533, 111188), (2618, 107578), (2831, 99484), (2926, 96254), (3278, 85918), (3553, 79268), (3971, 70924), (4172, 67507), (4522, 62282), (5054, 55726), (5066, 55594), (5236, 53789), (5662, 49742), (5852, 48127), (6137, 45892), (6556, 42959), (7106, 39634), (7942, 35462), (9044, 31141), (10108, 27863), (10132, 27797), (11324, 24871), (11473, 24548), (12274, 22946), (14212, 19817), (15884, 17731)]