18643040

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8963}}^1$

素因数の和:8991

約数の個数: 48

約数和(自身を含む): 47437488

約数和(自身を除く): 28794448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 8963, 17926, 35852, 44815, 71704, 89630, 116519, 143408, 179260, 233038, 286816, 358520, 466076, 582595, 717040, 932152, 1165190, 1434080, 1864304, 2330380, 3728608, 4660760, 9321520, 18643040]

約数ペア:

[(1, 18643040), (2, 9321520), (4, 4660760), (5, 3728608), (8, 2330380), (10, 1864304), (13, 1434080), (16, 1165190), (20, 932152), (26, 717040), (32, 582595), (40, 466076), (52, 358520), (65, 286816), (80, 233038), (104, 179260), (130, 143408), (160, 116519), (208, 89630), (260, 71704), (416, 44815), (520, 35852), (1040, 17926), (2080, 8963)]