640497060

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{508331}}^1$

素因数の和:508353

約数の個数: 72

約数和(自身を含む): 2220394176

約数和(自身を除く): 1579897116

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 508331, 1016662, 1524993, 2033324, 2541655, 3049986, 3558317, 4574979, 5083310, 6099972, 7116634, 7624965, 9149958, 10166620, 10674951, 14233268, 15249930, 17791585, 18299916, 21349902, 22874895, 30499860, 32024853, 35583170, 42699804, 45749790, 53374755, 64049706, 71166340, 91499580, 106749510, 128099412, 160124265, 213499020, 320248530, 640497060]

約数ペア:

[(1, 640497060), (2, 320248530), (3, 213499020), (4, 160124265), (5, 128099412), (6, 106749510), (7, 91499580), (9, 71166340), (10, 64049706), (12, 53374755), (14, 45749790), (15, 42699804), (18, 35583170), (20, 32024853), (21, 30499860), (28, 22874895), (30, 21349902), (35, 18299916), (36, 17791585), (42, 15249930), (45, 14233268), (60, 10674951), (63, 10166620), (70, 9149958), (84, 7624965), (90, 7116634), (105, 6099972), (126, 5083310), (140, 4574979), (180, 3558317), (210, 3049986), (252, 2541655), (315, 2033324), (420, 1524993), (630, 1016662), (1260, 508331)]