21526960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2957}}^1$

素因数の和:2990

約数の個数: 80

約数和(自身を含む): 61621056

約数和(自身を除く): 40094096

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2957, 3640, 5914, 7280, 11828, 14785, 20699, 23656, 29570, 38441, 41398, 47312, 59140, 76882, 82796, 103495, 118280, 153764, 165592, 192205, 206990, 236560, 269087, 307528, 331184, 384410, 413980, 538174, 615056, 768820, 827960, 1076348, 1345435, 1537640, 1655920, 2152696, 2690870, 3075280, 4305392, 5381740, 10763480, 21526960]

約数ペア:

[(1, 21526960), (2, 10763480), (4, 5381740), (5, 4305392), (7, 3075280), (8, 2690870), (10, 2152696), (13, 1655920), (14, 1537640), (16, 1345435), (20, 1076348), (26, 827960), (28, 768820), (35, 615056), (40, 538174), (52, 413980), (56, 384410), (65, 331184), (70, 307528), (80, 269087), (91, 236560), (104, 206990), (112, 192205), (130, 165592), (140, 153764), (182, 118280), (208, 103495), (260, 82796), (280, 76882), (364, 59140), (455, 47312), (520, 41398), (560, 38441), (728, 29570), (910, 23656), (1040, 20699), (1456, 14785), (1820, 11828), (2957, 7280), (3640, 5914)]