20644560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{541}}^1$

素因数の和:613

約数の個数: 120

約数和(自身を含む): 70770024

約数和(自身を除く): 50125464

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 53, 60, 72, 80, 90, 106, 120, 144, 159, 180, 212, 240, 265, 318, 360, 424, 477, 530, 541, 636, 720, 795, 848, 954, 1060, 1082, 1272, 1590, 1623, 1908, 2120, 2164, 2385, 2544, 2705, 3180, 3246, 3816, 4240, 4328, 4770, 4869, 5410, 6360, 6492, 7632, 8115, 8656, 9540, 9738, 10820, 12720, 12984, 16230, 19080, 19476, 21640, 24345, 25968, 28673, 32460, 38160, 38952, 43280, 48690, 57346, 64920, 77904, 86019, 97380, 114692, 129840, 143365, 172038, 194760, 229384, 258057, 286730, 344076, 389520, 430095, 458768, 516114, 573460, 688152, 860190, 1032228, 1146920, 1290285, 1376304, 1720380, 2064456, 2293840, 2580570, 3440760, 4128912, 5161140, 6881520, 10322280, 20644560]

約数ペア:

[(1, 20644560), (2, 10322280), (3, 6881520), (4, 5161140), (5, 4128912), (6, 3440760), (8, 2580570), (9, 2293840), (10, 2064456), (12, 1720380), (15, 1376304), (16, 1290285), (18, 1146920), (20, 1032228), (24, 860190), (30, 688152), (36, 573460), (40, 516114), (45, 458768), (48, 430095), (53, 389520), (60, 344076), (72, 286730), (80, 258057), (90, 229384), (106, 194760), (120, 172038), (144, 143365), (159, 129840), (180, 114692), (212, 97380), (240, 86019), (265, 77904), (318, 64920), (360, 57346), (424, 48690), (477, 43280), (530, 38952), (541, 38160), (636, 32460), (720, 28673), (795, 25968), (848, 24345), (954, 21640), (1060, 19476), (1082, 19080), (1272, 16230), (1590, 12984), (1623, 12720), (1908, 10820), (2120, 9738), (2164, 9540), (2385, 8656), (2544, 8115), (2705, 7632), (3180, 6492), (3246, 6360), (3816, 5410), (4240, 4869), (4328, 4770)]