257245425

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{16103}}^1$

素因数の和:16190

約数の個数: 36

約数和(自身を含む): 467273664

約数和(自身を除く): 210028239

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1775, 3195, 5325, 15975, 16103, 48309, 80515, 144927, 241545, 402575, 724635, 1143313, 1207725, 3429939, 3623175, 5716565, 10289817, 17149695, 28582825, 51449085, 85748475, 257245425]

約数ペア:

[(1, 257245425), (3, 85748475), (5, 51449085), (9, 28582825), (15, 17149695), (25, 10289817), (45, 5716565), (71, 3623175), (75, 3429939), (213, 1207725), (225, 1143313), (355, 724635), (639, 402575), (1065, 241545), (1775, 144927), (3195, 80515), (5325, 48309), (15975, 16103)]