21859045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 29685600

約数和(自身を除く): 7826555

約数列:

[1, 5, 13, 37, 61, 65, 149, 185, 305, 481, 745, 793, 1937, 2257, 2405, 3965, 5513, 9089, 9685, 11285, 27565, 29341, 45445, 71669, 118157, 146705, 336293, 358345, 590785, 1681465, 4371809, 21859045]

約数ペア:

[(1, 21859045), (5, 4371809), (13, 1681465), (37, 590785), (61, 358345), (65, 336293), (149, 146705), (185, 118157), (305, 71669), (481, 45445), (745, 29341), (793, 27565), (1937, 11285), (2257, 9685), (2405, 9089), (3965, 5513)]