20478840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3631}}^1$

素因数の和:3692

約数の個数: 64

約数和(自身を含む): 62760960

約数和(自身を除く): 42282120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 94, 120, 141, 188, 235, 282, 376, 470, 564, 705, 940, 1128, 1410, 1880, 2820, 3631, 5640, 7262, 10893, 14524, 18155, 21786, 29048, 36310, 43572, 54465, 72620, 87144, 108930, 145240, 170657, 217860, 341314, 435720, 511971, 682628, 853285, 1023942, 1365256, 1706570, 2047884, 2559855, 3413140, 4095768, 5119710, 6826280, 10239420, 20478840]

約数ペア:

[(1, 20478840), (2, 10239420), (3, 6826280), (4, 5119710), (5, 4095768), (6, 3413140), (8, 2559855), (10, 2047884), (12, 1706570), (15, 1365256), (20, 1023942), (24, 853285), (30, 682628), (40, 511971), (47, 435720), (60, 341314), (94, 217860), (120, 170657), (141, 145240), (188, 108930), (235, 87144), (282, 72620), (376, 54465), (470, 43572), (564, 36310), (705, 29048), (940, 21786), (1128, 18155), (1410, 14524), (1880, 10893), (2820, 7262), (3631, 5640)]