20139080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38729}}^1$

素因数の和:38753

約数の個数: 32

約数和(自身を含む): 48799800

約数和(自身を除く): 28660720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38729, 77458, 154916, 193645, 309832, 387290, 503477, 774580, 1006954, 1549160, 2013908, 2517385, 4027816, 5034770, 10069540, 20139080]

約数ペア:

[(1, 20139080), (2, 10069540), (4, 5034770), (5, 4027816), (8, 2517385), (10, 2013908), (13, 1549160), (20, 1006954), (26, 774580), (40, 503477), (52, 387290), (65, 309832), (104, 193645), (130, 154916), (260, 77458), (520, 38729)]