20726680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1733}}^1$

素因数の和:1780

約数の個数: 64

約数和(自身を含む): 52436160

約数和(自身を除く): 31709480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1733, 2392, 2990, 3466, 5980, 6932, 8665, 11960, 13864, 17330, 22529, 34660, 39859, 45058, 69320, 79718, 90116, 112645, 159436, 180232, 199295, 225290, 318872, 398590, 450580, 518167, 797180, 901160, 1036334, 1594360, 2072668, 2590835, 4145336, 5181670, 10363340, 20726680]

約数ペア:

[(1, 20726680), (2, 10363340), (4, 5181670), (5, 4145336), (8, 2590835), (10, 2072668), (13, 1594360), (20, 1036334), (23, 901160), (26, 797180), (40, 518167), (46, 450580), (52, 398590), (65, 318872), (92, 225290), (104, 199295), (115, 180232), (130, 159436), (184, 112645), (230, 90116), (260, 79718), (299, 69320), (460, 45058), (520, 39859), (598, 34660), (920, 22529), (1196, 17330), (1495, 13864), (1733, 11960), (2392, 8665), (2990, 6932), (3466, 5980)]