21485208

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 55756800

約数和(自身を除く): 34271592

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 109, 129, 172, 191, 218, 258, 327, 344, 382, 436, 516, 573, 654, 764, 872, 1032, 1146, 1308, 1528, 2292, 2616, 4584, 4687, 8213, 9374, 14061, 16426, 18748, 20819, 24639, 28122, 32852, 37496, 41638, 49278, 56244, 62457, 65704, 83276, 98556, 112488, 124914, 166552, 197112, 249828, 499656, 895217, 1790434, 2685651, 3580868, 5371302, 7161736, 10742604, 21485208]

約数ペア:

[(1, 21485208), (2, 10742604), (3, 7161736), (4, 5371302), (6, 3580868), (8, 2685651), (12, 1790434), (24, 895217), (43, 499656), (86, 249828), (109, 197112), (129, 166552), (172, 124914), (191, 112488), (218, 98556), (258, 83276), (327, 65704), (344, 62457), (382, 56244), (436, 49278), (516, 41638), (573, 37496), (654, 32852), (764, 28122), (872, 24639), (1032, 20819), (1146, 18748), (1308, 16426), (1528, 14061), (2292, 9374), (2616, 8213), (4584, 4687)]