90163580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{20399}}^1$

素因数の和:20438

約数の個数: 48

約数和(自身を含む): 215913600

約数和(自身を除く): 125750020

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 20399, 40798, 81596, 101995, 203990, 265187, 346783, 407980, 530374, 693566, 1060748, 1325935, 1387132, 1733915, 2651870, 3467830, 4508179, 5303740, 6935660, 9016358, 18032716, 22540895, 45081790, 90163580]

約数ペア:

[(1, 90163580), (2, 45081790), (4, 22540895), (5, 18032716), (10, 9016358), (13, 6935660), (17, 5303740), (20, 4508179), (26, 3467830), (34, 2651870), (52, 1733915), (65, 1387132), (68, 1325935), (85, 1060748), (130, 693566), (170, 530374), (221, 407980), (260, 346783), (340, 265187), (442, 203990), (884, 101995), (1105, 81596), (2210, 40798), (4420, 20399)]