20515804556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1\times {\mathrm{15161}}^1$

素因数の和:15722

約数の個数: 48

約数和(自身を含む): 39476753568

約数和(自身を除く): 18960949012

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 491, 689, 982, 1378, 1964, 2756, 6383, 12766, 15161, 25532, 26023, 30322, 52046, 60644, 104092, 197093, 338299, 394186, 676598, 788372, 803533, 1353196, 1607066, 3214132, 7444051, 10445929, 14888102, 20891858, 29776204, 41783716, 96772663, 193545326, 387090652, 394534703, 789069406, 1578138812, 5128951139, 10257902278, 20515804556]

約数ペア:

[(1, 20515804556), (2, 10257902278), (4, 5128951139), (13, 1578138812), (26, 789069406), (52, 394534703), (53, 387090652), (106, 193545326), (212, 96772663), (491, 41783716), (689, 29776204), (982, 20891858), (1378, 14888102), (1964, 10445929), (2756, 7444051), (6383, 3214132), (12766, 1607066), (15161, 1353196), (25532, 803533), (26023, 788372), (30322, 676598), (52046, 394186), (60644, 338299), (104092, 197093)]