28978404

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 90091008

約数和(自身を除く): 61112604

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 17, 21, 26, 28, 34, 39, 42, 49, 51, 52, 68, 78, 84, 91, 98, 102, 119, 147, 156, 182, 196, 204, 221, 223, 238, 273, 294, 357, 364, 442, 446, 476, 546, 588, 637, 663, 669, 714, 833, 884, 892, 1092, 1274, 1326, 1338, 1428, 1547, 1561, 1666, 1911, 2499, 2548, 2652, 2676, 2899, 3094, 3122, 3332, 3791, 3822, 4641, 4683, 4998, 5798, 6188, 6244, 7582, 7644, 8697, 9282, 9366, 9996, 10829, 10927, 11373, 11596, 15164, 17394, 18564, 18732, 20293, 21658, 21854, 22746, 26537, 32487, 32781, 34788, 40586, 43316, 43708, 45492, 49283, 53074, 60879, 64974, 65562, 79611, 81172, 98566, 106148, 121758, 129948, 131124, 142051, 147849, 159222, 185759, 197132, 243516, 284102, 295698, 318444, 344981, 371518, 426153, 557277, 568204, 591396, 689962, 743036, 852306, 1034943, 1114554, 1379924, 1704612, 2069886, 2229108, 2414867, 4139772, 4829734, 7244601, 9659468, 14489202, 28978404]

約数ペア:

[(1, 28978404), (2, 14489202), (3, 9659468), (4, 7244601), (6, 4829734), (7, 4139772), (12, 2414867), (13, 2229108), (14, 2069886), (17, 1704612), (21, 1379924), (26, 1114554), (28, 1034943), (34, 852306), (39, 743036), (42, 689962), (49, 591396), (51, 568204), (52, 557277), (68, 426153), (78, 371518), (84, 344981), (91, 318444), (98, 295698), (102, 284102), (119, 243516), (147, 197132), (156, 185759), (182, 159222), (196, 147849), (204, 142051), (221, 131124), (223, 129948), (238, 121758), (273, 106148), (294, 98566), (357, 81172), (364, 79611), (442, 65562), (446, 64974), (476, 60879), (546, 53074), (588, 49283), (637, 45492), (663, 43708), (669, 43316), (714, 40586), (833, 34788), (884, 32781), (892, 32487), (1092, 26537), (1274, 22746), (1326, 21854), (1338, 21658), (1428, 20293), (1547, 18732), (1561, 18564), (1666, 17394), (1911, 15164), (2499, 11596), (2548, 11373), (2652, 10927), (2676, 10829), (2899, 9996), (3094, 9366), (3122, 9282), (3332, 8697), (3791, 7644), (3822, 7582), (4641, 6244), (4683, 6188), (4998, 5798)]