8209880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 21384000

約数和(自身を除く): 13174120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 269, 280, 436, 538, 545, 763, 872, 1076, 1090, 1345, 1526, 1883, 2152, 2180, 2690, 3052, 3766, 3815, 4360, 5380, 6104, 7532, 7630, 9415, 10760, 15064, 15260, 18830, 29321, 30520, 37660, 58642, 75320, 117284, 146605, 205247, 234568, 293210, 410494, 586420, 820988, 1026235, 1172840, 1641976, 2052470, 4104940, 8209880]

約数ペア:

[(1, 8209880), (2, 4104940), (4, 2052470), (5, 1641976), (7, 1172840), (8, 1026235), (10, 820988), (14, 586420), (20, 410494), (28, 293210), (35, 234568), (40, 205247), (56, 146605), (70, 117284), (109, 75320), (140, 58642), (218, 37660), (269, 30520), (280, 29321), (436, 18830), (538, 15260), (545, 15064), (763, 10760), (872, 9415), (1076, 7630), (1090, 7532), (1345, 6104), (1526, 5380), (1883, 4360), (2152, 3815), (2180, 3766), (2690, 3052)]