21805472

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:142

約数の個数: 96

約数和(自身を含む): 50295168

約数和(自身を除く): 28489696

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 43, 46, 52, 53, 86, 92, 104, 106, 172, 184, 208, 212, 299, 344, 368, 416, 424, 559, 598, 688, 689, 736, 848, 989, 1118, 1196, 1219, 1376, 1378, 1696, 1978, 2236, 2279, 2392, 2438, 2756, 3956, 4472, 4558, 4784, 4876, 5512, 7912, 8944, 9116, 9568, 9752, 11024, 12857, 15824, 15847, 17888, 18232, 19504, 22048, 25714, 29627, 31648, 31694, 36464, 39008, 51428, 52417, 59254, 63388, 72928, 102856, 104834, 118508, 126776, 205712, 209668, 237016, 253552, 411424, 419336, 474032, 507104, 681421, 838672, 948064, 1362842, 1677344, 2725684, 5451368, 10902736, 21805472]

約数ペア:

[(1, 21805472), (2, 10902736), (4, 5451368), (8, 2725684), (13, 1677344), (16, 1362842), (23, 948064), (26, 838672), (32, 681421), (43, 507104), (46, 474032), (52, 419336), (53, 411424), (86, 253552), (92, 237016), (104, 209668), (106, 205712), (172, 126776), (184, 118508), (208, 104834), (212, 102856), (299, 72928), (344, 63388), (368, 59254), (416, 52417), (424, 51428), (559, 39008), (598, 36464), (688, 31694), (689, 31648), (736, 29627), (848, 25714), (989, 22048), (1118, 19504), (1196, 18232), (1219, 17888), (1376, 15847), (1378, 15824), (1696, 12857), (1978, 11024), (2236, 9752), (2279, 9568), (2392, 9116), (2438, 8944), (2756, 7912), (3956, 5512), (4472, 4876), (4558, 4784)]