21059350

素因数分解:

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

素因数の和:385

約数の個数: 48

約数和(自身を含む): 42653520

約数和(自身を除く): 21594170

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 179, 181, 325, 358, 362, 650, 895, 905, 1790, 1810, 2327, 2353, 4475, 4525, 4654, 4706, 8950, 9050, 11635, 11765, 23270, 23530, 32399, 58175, 58825, 64798, 116350, 117650, 161995, 323990, 421187, 809975, 842374, 1619950, 2105935, 4211870, 10529675, 21059350]

約数ペア:

[(1, 21059350), (2, 10529675), (5, 4211870), (10, 2105935), (13, 1619950), (25, 842374), (26, 809975), (50, 421187), (65, 323990), (130, 161995), (179, 117650), (181, 116350), (325, 64798), (358, 58825), (362, 58175), (650, 32399), (895, 23530), (905, 23270), (1790, 11765), (1810, 11635), (2327, 9050), (2353, 8950), (4475, 4706), (4525, 4654)]