20185960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 47738880

約数和(自身を除く): 27552920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 223, 248, 292, 310, 365, 446, 584, 620, 730, 892, 1115, 1240, 1460, 1784, 2230, 2263, 2920, 4460, 4526, 6913, 8920, 9052, 11315, 13826, 16279, 18104, 22630, 27652, 32558, 34565, 45260, 55304, 65116, 69130, 81395, 90520, 130232, 138260, 162790, 276520, 325580, 504649, 651160, 1009298, 2018596, 2523245, 4037192, 5046490, 10092980, 20185960]

約数ペア:

[(1, 20185960), (2, 10092980), (4, 5046490), (5, 4037192), (8, 2523245), (10, 2018596), (20, 1009298), (31, 651160), (40, 504649), (62, 325580), (73, 276520), (124, 162790), (146, 138260), (155, 130232), (223, 90520), (248, 81395), (292, 69130), (310, 65116), (365, 55304), (446, 45260), (584, 34565), (620, 32558), (730, 27652), (892, 22630), (1115, 18104), (1240, 16279), (1460, 13826), (1784, 11315), (2230, 9052), (2263, 8920), (2920, 6913), (4460, 4526)]