21563490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55291}}^1$

素因数の和:55314

約数の個数: 32

約数和(自身を含む): 55734336

約数和(自身を除く): 34170846

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55291, 110582, 165873, 276455, 331746, 552910, 718783, 829365, 1437566, 1658730, 2156349, 3593915, 4312698, 7187830, 10781745, 21563490]

約数ペア:

[(1, 21563490), (2, 10781745), (3, 7187830), (5, 4312698), (6, 3593915), (10, 2156349), (13, 1658730), (15, 1437566), (26, 829365), (30, 718783), (39, 552910), (65, 331746), (78, 276455), (130, 165873), (195, 110582), (390, 55291)]