189801980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{8779}}^1$

素因数の和:8858

約数の個数: 48

約数和(自身を含む): 424811520

約数和(自身を除く): 235009540

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 940, 1081, 2162, 4324, 5405, 8779, 10810, 17558, 21620, 35116, 43895, 87790, 175580, 201917, 403834, 412613, 807668, 825226, 1009585, 1650452, 2019170, 2063065, 4038340, 4126130, 8252260, 9490099, 18980198, 37960396, 47450495, 94900990, 189801980]

約数ペア:

[(1, 189801980), (2, 94900990), (4, 47450495), (5, 37960396), (10, 18980198), (20, 9490099), (23, 8252260), (46, 4126130), (47, 4038340), (92, 2063065), (94, 2019170), (115, 1650452), (188, 1009585), (230, 825226), (235, 807668), (460, 412613), (470, 403834), (940, 201917), (1081, 175580), (2162, 87790), (4324, 43895), (5405, 35116), (8779, 21620), (10810, 17558)]