21657060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1523}}^1$

素因数の和:1617

約数の個数: 72

約数和(自身を含む): 66568320

約数和(自身を除く): 44911260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1523, 1580, 2370, 2844, 3046, 3555, 4569, 4740, 6092, 7110, 7615, 9138, 13707, 14220, 15230, 18276, 22845, 27414, 30460, 45690, 54828, 68535, 91380, 120317, 137070, 240634, 274140, 360951, 481268, 601585, 721902, 1082853, 1203170, 1443804, 1804755, 2165706, 2406340, 3609510, 4331412, 5414265, 7219020, 10828530, 21657060]

約数ペア:

[(1, 21657060), (2, 10828530), (3, 7219020), (4, 5414265), (5, 4331412), (6, 3609510), (9, 2406340), (10, 2165706), (12, 1804755), (15, 1443804), (18, 1203170), (20, 1082853), (30, 721902), (36, 601585), (45, 481268), (60, 360951), (79, 274140), (90, 240634), (158, 137070), (180, 120317), (237, 91380), (316, 68535), (395, 54828), (474, 45690), (711, 30460), (790, 27414), (948, 22845), (1185, 18276), (1422, 15230), (1523, 14220), (1580, 13707), (2370, 9138), (2844, 7615), (3046, 7110), (3555, 6092), (4569, 4740)]