19939510

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 37407744

約数和(自身を除く): 17468234

約数列:

[1, 2, 5, 10, 31, 62, 131, 155, 262, 310, 491, 655, 982, 1310, 2455, 4061, 4910, 8122, 15221, 20305, 30442, 40610, 64321, 76105, 128642, 152210, 321605, 643210, 1993951, 3987902, 9969755, 19939510]

約数ペア:

[(1, 19939510), (2, 9969755), (5, 3987902), (10, 1993951), (31, 643210), (62, 321605), (131, 152210), (155, 128642), (262, 76105), (310, 64321), (491, 40610), (655, 30442), (982, 20305), (1310, 15221), (2455, 8122), (4061, 4910)]