208556816

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 80

約数和(自身を含む): 464814000

約数和(自身を除く): 256257184

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 169, 208, 221, 272, 338, 349, 442, 676, 698, 884, 1352, 1396, 1768, 2197, 2704, 2792, 2873, 3536, 4394, 4537, 5584, 5746, 5933, 8788, 9074, 11492, 11866, 17576, 18148, 22984, 23732, 35152, 36296, 37349, 45968, 47464, 58981, 72592, 74698, 77129, 94928, 117962, 149396, 154258, 235924, 298792, 308516, 471848, 597584, 617032, 766753, 943696, 1002677, 1234064, 1533506, 2005354, 3067012, 4010708, 6134024, 8021416, 12268048, 13034801, 16042832, 26069602, 52139204, 104278408, 208556816]

約数ペア:

[(1, 208556816), (2, 104278408), (4, 52139204), (8, 26069602), (13, 16042832), (16, 13034801), (17, 12268048), (26, 8021416), (34, 6134024), (52, 4010708), (68, 3067012), (104, 2005354), (136, 1533506), (169, 1234064), (208, 1002677), (221, 943696), (272, 766753), (338, 617032), (349, 597584), (442, 471848), (676, 308516), (698, 298792), (884, 235924), (1352, 154258), (1396, 149396), (1768, 117962), (2197, 94928), (2704, 77129), (2792, 74698), (2873, 72592), (3536, 58981), (4394, 47464), (4537, 45968), (5584, 37349), (5746, 36296), (5933, 35152), (8788, 23732), (9074, 22984), (11492, 18148), (11866, 17576)]