20663180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24382324

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 113, 164, 205, 223, 226, 410, 446, 452, 565, 820, 892, 1115, 1130, 2230, 2260, 4460, 4633, 9143, 9266, 18286, 18532, 23165, 25199, 36572, 45715, 46330, 50398, 91430, 92660, 100796, 125995, 182860, 251990, 503980, 1033159, 2066318, 4132636, 5165795, 10331590, 20663180]

約数ペア:

[(1, 20663180), (2, 10331590), (4, 5165795), (5, 4132636), (10, 2066318), (20, 1033159), (41, 503980), (82, 251990), (113, 182860), (164, 125995), (205, 100796), (223, 92660), (226, 91430), (410, 50398), (446, 46330), (452, 45715), (565, 36572), (820, 25199), (892, 23165), (1115, 18532), (1130, 18286), (2230, 9266), (2260, 9143), (4460, 4633)]