19954520

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{757}}^1$

素因数の和:1427

約数の個数: 32

約数和(自身を含む): 45025200

約数和(自身を除く): 25070680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 757, 1318, 1514, 2636, 3028, 3295, 3785, 5272, 6056, 6590, 7570, 13180, 15140, 26360, 30280, 498863, 997726, 1995452, 2494315, 3990904, 4988630, 9977260, 19954520]

約数ペア:

[(1, 19954520), (2, 9977260), (4, 4988630), (5, 3990904), (8, 2494315), (10, 1995452), (20, 997726), (40, 498863), (659, 30280), (757, 26360), (1318, 15140), (1514, 13180), (2636, 7570), (3028, 6590), (3295, 6056), (3785, 5272)]