131477980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1471}}^1$

素因数の和:1630

約数の個数: 48

約数和(自身を含む): 285626880

約数和(自身を除く): 154148900

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 410, 436, 545, 820, 1090, 1471, 2180, 2942, 4469, 5884, 7355, 8938, 14710, 17876, 22345, 29420, 44690, 60311, 89380, 120622, 160339, 241244, 301555, 320678, 603110, 641356, 801695, 1206220, 1603390, 3206780, 6573899, 13147798, 26295596, 32869495, 65738990, 131477980]

約数ペア:

[(1, 131477980), (2, 65738990), (4, 32869495), (5, 26295596), (10, 13147798), (20, 6573899), (41, 3206780), (82, 1603390), (109, 1206220), (164, 801695), (205, 641356), (218, 603110), (410, 320678), (436, 301555), (545, 241244), (820, 160339), (1090, 120622), (1471, 89380), (2180, 60311), (2942, 44690), (4469, 29420), (5884, 22345), (7355, 17876), (8938, 14710)]