71601790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:397

約数の個数: 64

約数和(自身を含む): 148599360

約数和(自身を除く): 76997570

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 179, 181, 221, 358, 362, 442, 895, 905, 1105, 1790, 1810, 2210, 2327, 2353, 3043, 3077, 4654, 4706, 6086, 6154, 11635, 11765, 15215, 15385, 23270, 23530, 30430, 30770, 32399, 39559, 40001, 64798, 79118, 80002, 161995, 197795, 200005, 323990, 395590, 400010, 421187, 550783, 842374, 1101566, 2105935, 2753915, 4211870, 5507830, 7160179, 14320358, 35800895, 71601790]

約数ペア:

[(1, 71601790), (2, 35800895), (5, 14320358), (10, 7160179), (13, 5507830), (17, 4211870), (26, 2753915), (34, 2105935), (65, 1101566), (85, 842374), (130, 550783), (170, 421187), (179, 400010), (181, 395590), (221, 323990), (358, 200005), (362, 197795), (442, 161995), (895, 80002), (905, 79118), (1105, 64798), (1790, 40001), (1810, 39559), (2210, 32399), (2327, 30770), (2353, 30430), (3043, 23530), (3077, 23270), (4654, 15385), (4706, 15215), (6086, 11765), (6154, 11635)]