20165940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4871}}^1$

素因数の和:4909

約数の個数: 72

約数和(自身を含む): 63842688

約数和(自身を除く): 43676748

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4871, 9742, 14613, 19484, 24355, 29226, 43839, 48710, 58452, 73065, 87678, 97420, 112033, 146130, 175356, 219195, 224066, 292260, 336099, 438390, 448132, 560165, 672198, 876780, 1008297, 1120330, 1344396, 1680495, 2016594, 2240660, 3360990, 4033188, 5041485, 6721980, 10082970, 20165940]

約数ペア:

[(1, 20165940), (2, 10082970), (3, 6721980), (4, 5041485), (5, 4033188), (6, 3360990), (9, 2240660), (10, 2016594), (12, 1680495), (15, 1344396), (18, 1120330), (20, 1008297), (23, 876780), (30, 672198), (36, 560165), (45, 448132), (46, 438390), (60, 336099), (69, 292260), (90, 224066), (92, 219195), (115, 175356), (138, 146130), (180, 112033), (207, 97420), (230, 87678), (276, 73065), (345, 58452), (414, 48710), (460, 43839), (690, 29226), (828, 24355), (1035, 19484), (1380, 14613), (2070, 9742), (4140, 4871)]