21225720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2239}}^1$

素因数の和:2332

約数の個数: 64

約数和(自身を含む): 64512000

約数和(自身を除く): 43286280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2239, 2370, 3160, 4478, 4740, 6717, 8956, 9480, 11195, 13434, 17912, 22390, 26868, 33585, 44780, 53736, 67170, 89560, 134340, 176881, 268680, 353762, 530643, 707524, 884405, 1061286, 1415048, 1768810, 2122572, 2653215, 3537620, 4245144, 5306430, 7075240, 10612860, 21225720]

約数ペア:

[(1, 21225720), (2, 10612860), (3, 7075240), (4, 5306430), (5, 4245144), (6, 3537620), (8, 2653215), (10, 2122572), (12, 1768810), (15, 1415048), (20, 1061286), (24, 884405), (30, 707524), (40, 530643), (60, 353762), (79, 268680), (120, 176881), (158, 134340), (237, 89560), (316, 67170), (395, 53736), (474, 44780), (632, 33585), (790, 26868), (948, 22390), (1185, 17912), (1580, 13434), (1896, 11195), (2239, 9480), (2370, 8956), (3160, 6717), (4478, 4740)]