20191760

素因数分解:

$2^4\times 5^1\times {\mathrm{383}}^1\times {\mathrm{659}}^1$

素因数の和:1055

約数の個数: 40

約数和(自身を含む): 47139840

約数和(自身を除く): 26948080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 383, 659, 766, 1318, 1532, 1915, 2636, 3064, 3295, 3830, 5272, 6128, 6590, 7660, 10544, 13180, 15320, 26360, 30640, 52720, 252397, 504794, 1009588, 1261985, 2019176, 2523970, 4038352, 5047940, 10095880, 20191760]

約数ペア:

[(1, 20191760), (2, 10095880), (4, 5047940), (5, 4038352), (8, 2523970), (10, 2019176), (16, 1261985), (20, 1009588), (40, 504794), (80, 252397), (383, 52720), (659, 30640), (766, 26360), (1318, 15320), (1532, 13180), (1915, 10544), (2636, 7660), (3064, 6590), (3295, 6128), (3830, 5272)]