21713040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{569}}^1$

素因数の和:641

約数の個数: 120

約数和(自身を含む): 74426040

約数和(自身を除く): 52713000

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, 569, 636, 720, 795, 848, 954, 1060, 1138, 1272, 1590, 1707, 1908, 2120, 2276, 2385, 2544, 2845, 3180, 3414, 3816, 4240, 4552, 4770, 5121, 5690, 6360, 6828, 7632, 8535, 9104, 9540, 10242, 11380, 12720, 13656, 17070, 19080, 20484, 22760, 25605, 27312, 30157, 34140, 38160, 40968, 45520, 51210, 60314, 68280, 81936, 90471, 102420, 120628, 136560, 150785, 180942, 204840, 241256, 271413, 301570, 361884, 409680, 452355, 482512, 542826, 603140, 723768, 904710, 1085652, 1206280, 1357065, 1447536, 1809420, 2171304, 2412560, 2714130, 3618840, 4342608, 5428260, 7237680, 10856520, 21713040]

約数ペア:

[(1, 21713040), (2, 10856520), (3, 7237680), (4, 5428260), (5, 4342608), (6, 3618840), (8, 2714130), (9, 2412560), (10, 2171304), (12, 1809420), (15, 1447536), (16, 1357065), (18, 1206280), (20, 1085652), (24, 904710), (30, 723768), (36, 603140), (40, 542826), (45, 482512), (48, 452355), (53, 409680), (60, 361884), (72, 301570), (80, 271413), (90, 241256), (106, 204840), (120, 180942), (144, 150785), (159, 136560), (180, 120628), (212, 102420), (240, 90471), (265, 81936), (318, 68280), (360, 60314), (424, 51210), (477, 45520), (530, 40968), (569, 38160), (636, 34140), (720, 30157), (795, 27312), (848, 25605), (954, 22760), (1060, 20484), (1138, 19080), (1272, 17070), (1590, 13656), (1707, 12720), (1908, 11380), (2120, 10242), (2276, 9540), (2385, 9104), (2544, 8535), (2845, 7632), (3180, 6828), (3414, 6360), (3816, 5690), (4240, 5121), (4552, 4770)]