81675880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 128

約数和(自身を含む): 219542400

約数和(自身を除く): 137866520

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 109, 110, 130, 131, 143, 218, 220, 260, 262, 286, 436, 440, 520, 524, 545, 572, 655, 715, 872, 1048, 1090, 1144, 1199, 1310, 1417, 1430, 1441, 1703, 2180, 2398, 2620, 2834, 2860, 2882, 3406, 4360, 4796, 5240, 5668, 5720, 5764, 5995, 6812, 7085, 7205, 8515, 9592, 11336, 11528, 11990, 13624, 14170, 14279, 14410, 15587, 17030, 18733, 23980, 28340, 28558, 28820, 31174, 34060, 37466, 47960, 56680, 57116, 57640, 62348, 68120, 71395, 74932, 77935, 93665, 114232, 124696, 142790, 149864, 155870, 157069, 185627, 187330, 285580, 311740, 314138, 371254, 374660, 571160, 623480, 628276, 742508, 749320, 785345, 928135, 1256552, 1485016, 1570690, 1856270, 2041897, 3141380, 3712540, 4083794, 6282760, 7425080, 8167588, 10209485, 16335176, 20418970, 40837940, 81675880]

約数ペア:

[(1, 81675880), (2, 40837940), (4, 20418970), (5, 16335176), (8, 10209485), (10, 8167588), (11, 7425080), (13, 6282760), (20, 4083794), (22, 3712540), (26, 3141380), (40, 2041897), (44, 1856270), (52, 1570690), (55, 1485016), (65, 1256552), (88, 928135), (104, 785345), (109, 749320), (110, 742508), (130, 628276), (131, 623480), (143, 571160), (218, 374660), (220, 371254), (260, 314138), (262, 311740), (286, 285580), (436, 187330), (440, 185627), (520, 157069), (524, 155870), (545, 149864), (572, 142790), (655, 124696), (715, 114232), (872, 93665), (1048, 77935), (1090, 74932), (1144, 71395), (1199, 68120), (1310, 62348), (1417, 57640), (1430, 57116), (1441, 56680), (1703, 47960), (2180, 37466), (2398, 34060), (2620, 31174), (2834, 28820), (2860, 28558), (2882, 28340), (3406, 23980), (4360, 18733), (4796, 17030), (5240, 15587), (5668, 14410), (5720, 14279), (5764, 14170), (5995, 13624), (6812, 11990), (7085, 11528), (7205, 11336), (8515, 9592)]