20420184

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 53475840

約数和(自身を除く): 33055656

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 47, 86, 94, 129, 141, 172, 188, 258, 282, 344, 376, 421, 516, 564, 842, 1032, 1128, 1263, 1684, 2021, 2526, 3368, 4042, 5052, 6063, 8084, 10104, 12126, 16168, 18103, 19787, 24252, 36206, 39574, 48504, 54309, 59361, 72412, 79148, 108618, 118722, 144824, 158296, 217236, 237444, 434472, 474888, 850841, 1701682, 2552523, 3403364, 5105046, 6806728, 10210092, 20420184]

約数ペア:

[(1, 20420184), (2, 10210092), (3, 6806728), (4, 5105046), (6, 3403364), (8, 2552523), (12, 1701682), (24, 850841), (43, 474888), (47, 434472), (86, 237444), (94, 217236), (129, 158296), (141, 144824), (172, 118722), (188, 108618), (258, 79148), (282, 72412), (344, 59361), (376, 54309), (421, 48504), (516, 39574), (564, 36206), (842, 24252), (1032, 19787), (1128, 18103), (1263, 16168), (1684, 12126), (2021, 10104), (2526, 8084), (3368, 6063), (4042, 5052)]