81629560

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19813}}^1$

素因数の和:19927

約数の個数: 32

約数和(自身を含む): 185459040

約数和(自身を除く): 103829480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 19813, 39626, 79252, 99065, 158504, 198130, 396260, 792520, 2040739, 4081478, 8162956, 10203695, 16325912, 20407390, 40814780, 81629560]

約数ペア:

[(1, 81629560), (2, 40814780), (4, 20407390), (5, 16325912), (8, 10203695), (10, 8162956), (20, 4081478), (40, 2040739), (103, 792520), (206, 396260), (412, 198130), (515, 158504), (824, 99065), (1030, 79252), (2060, 39626), (4120, 19813)]