81845790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209861}}^1$

素因数の和:209884

約数の個数: 32

約数和(自身を含む): 211540896

約数和(自身を除く): 129695106

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 209861, 419722, 629583, 1049305, 1259166, 2098610, 2728193, 3147915, 5456386, 6295830, 8184579, 13640965, 16369158, 27281930, 40922895, 81845790]

約数ペア:

[(1, 81845790), (2, 40922895), (3, 27281930), (5, 16369158), (6, 13640965), (10, 8184579), (13, 6295830), (15, 5456386), (26, 3147915), (30, 2728193), (39, 2098610), (65, 1259166), (78, 1049305), (130, 629583), (195, 419722), (390, 209861)]