18992285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 25855200

約数和(自身を除く): 6862915

約数列:

[1, 5, 13, 37, 53, 65, 149, 185, 265, 481, 689, 745, 1937, 1961, 2405, 3445, 5513, 7897, 9685, 9805, 25493, 27565, 39485, 71669, 102661, 127465, 292189, 358345, 513305, 1460945, 3798457, 18992285]

約数ペア:

[(1, 18992285), (5, 3798457), (13, 1460945), (37, 513305), (53, 358345), (65, 292189), (149, 127465), (185, 102661), (265, 71669), (481, 39485), (689, 27565), (745, 25493), (1937, 9805), (1961, 9685), (2405, 7897), (3445, 5513)]