19880320

素因数分解:

$2^7\times 5^1\times {\mathrm{31063}}^1$

素因数の和:31082

約数の個数: 32

約数和(自身を含む): 47527920

約数和(自身を除く): 27647600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31063, 62126, 124252, 155315, 248504, 310630, 497008, 621260, 994016, 1242520, 1988032, 2485040, 3976064, 4970080, 9940160, 19880320]

約数ペア:

[(1, 19880320), (2, 9940160), (4, 4970080), (5, 3976064), (8, 2485040), (10, 1988032), (16, 1242520), (20, 994016), (32, 621260), (40, 497008), (64, 310630), (80, 248504), (128, 155315), (160, 124252), (320, 62126), (640, 31063)]