20626840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39667}}^1$

素因数の和:39691

約数の個数: 32

約数和(自身を含む): 49981680

約数和(自身を除く): 29354840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39667, 79334, 158668, 198335, 317336, 396670, 515671, 793340, 1031342, 1586680, 2062684, 2578355, 4125368, 5156710, 10313420, 20626840]

約数ペア:

[(1, 20626840), (2, 10313420), (4, 5156710), (5, 4125368), (8, 2578355), (10, 2062684), (13, 1586680), (20, 1031342), (26, 793340), (40, 515671), (52, 396670), (65, 317336), (104, 198335), (130, 158668), (260, 79334), (520, 39667)]