21003240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{967}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 63423360

約数和(自身を除く): 42420120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 181, 362, 543, 724, 905, 967, 1086, 1448, 1810, 1934, 2172, 2715, 2901, 3620, 3868, 4344, 4835, 5430, 5802, 7240, 7736, 9670, 10860, 11604, 14505, 19340, 21720, 23208, 29010, 38680, 58020, 116040, 175027, 350054, 525081, 700108, 875135, 1050162, 1400216, 1750270, 2100324, 2625405, 3500540, 4200648, 5250810, 7001080, 10501620, 21003240]

約数ペア:

[(1, 21003240), (2, 10501620), (3, 7001080), (4, 5250810), (5, 4200648), (6, 3500540), (8, 2625405), (10, 2100324), (12, 1750270), (15, 1400216), (20, 1050162), (24, 875135), (30, 700108), (40, 525081), (60, 350054), (120, 175027), (181, 116040), (362, 58020), (543, 38680), (724, 29010), (905, 23208), (967, 21720), (1086, 19340), (1448, 14505), (1810, 11604), (1934, 10860), (2172, 9670), (2715, 7736), (2901, 7240), (3620, 5802), (3868, 5430), (4344, 4835)]