20165840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13267}}^1$

素因数の和:13299

約数の個数: 40

約数和(自身を含む): 49356960

約数和(自身を除く): 29191120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13267, 26534, 53068, 66335, 106136, 132670, 212272, 252073, 265340, 504146, 530680, 1008292, 1061360, 1260365, 2016584, 2520730, 4033168, 5041460, 10082920, 20165840]

約数ペア:

[(1, 20165840), (2, 10082920), (4, 5041460), (5, 4033168), (8, 2520730), (10, 2016584), (16, 1260365), (19, 1061360), (20, 1008292), (38, 530680), (40, 504146), (76, 265340), (80, 252073), (95, 212272), (152, 132670), (190, 106136), (304, 66335), (380, 53068), (760, 26534), (1520, 13267)]