257608780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{90073}}^1$

素因数の和:90106

約数の個数: 48

約数和(自身を含む): 635562144

約数和(自身を除く): 377953364

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 90073, 180146, 360292, 450365, 900730, 990803, 1170949, 1801460, 1981606, 2341898, 3963212, 4683796, 4954015, 5854745, 9908030, 11709490, 12880439, 19816060, 23418980, 25760878, 51521756, 64402195, 128804390, 257608780]

約数ペア:

[(1, 257608780), (2, 128804390), (4, 64402195), (5, 51521756), (10, 25760878), (11, 23418980), (13, 19816060), (20, 12880439), (22, 11709490), (26, 9908030), (44, 5854745), (52, 4954015), (55, 4683796), (65, 3963212), (110, 2341898), (130, 1981606), (143, 1801460), (220, 1170949), (260, 990803), (286, 900730), (572, 450365), (715, 360292), (1430, 180146), (2860, 90073)]