18720342

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 43960320

約数和(自身を除く): 25239978

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 53, 54, 62, 93, 106, 159, 186, 211, 279, 318, 422, 477, 558, 633, 837, 954, 1266, 1431, 1643, 1674, 1899, 2862, 3286, 3798, 4929, 5697, 6541, 9858, 11183, 11394, 13082, 14787, 19623, 22366, 29574, 33549, 39246, 44361, 58869, 67098, 88722, 100647, 117738, 176607, 201294, 301941, 346673, 353214, 603882, 693346, 1040019, 2080038, 3120057, 6240114, 9360171, 18720342]

約数ペア:

[(1, 18720342), (2, 9360171), (3, 6240114), (6, 3120057), (9, 2080038), (18, 1040019), (27, 693346), (31, 603882), (53, 353214), (54, 346673), (62, 301941), (93, 201294), (106, 176607), (159, 117738), (186, 100647), (211, 88722), (279, 67098), (318, 58869), (422, 44361), (477, 39246), (558, 33549), (633, 29574), (837, 22366), (954, 19623), (1266, 14787), (1431, 13082), (1643, 11394), (1674, 11183), (1899, 9858), (2862, 6541), (3286, 5697), (3798, 4929)]