20080407880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{213349}}^1$

素因数の和:213554

約数の個数: 64

約数和(自身を含む): 48925422000

約数和(自身を除く): 28845014120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 181, 260, 362, 520, 724, 905, 1448, 1810, 2353, 3620, 4706, 7240, 9412, 11765, 18824, 23530, 47060, 94120, 213349, 426698, 853396, 1066745, 1706792, 2133490, 2773537, 4266980, 5547074, 8533960, 11094148, 13867685, 22188296, 27735370, 38616169, 55470740, 77232338, 110941480, 154464676, 193080845, 308929352, 386161690, 502010197, 772323380, 1004020394, 1544646760, 2008040788, 2510050985, 4016081576, 5020101970, 10040203940, 20080407880]

約数ペア:

[(1, 20080407880), (2, 10040203940), (4, 5020101970), (5, 4016081576), (8, 2510050985), (10, 2008040788), (13, 1544646760), (20, 1004020394), (26, 772323380), (40, 502010197), (52, 386161690), (65, 308929352), (104, 193080845), (130, 154464676), (181, 110941480), (260, 77232338), (362, 55470740), (520, 38616169), (724, 27735370), (905, 22188296), (1448, 13867685), (1810, 11094148), (2353, 8533960), (3620, 5547074), (4706, 4266980), (7240, 2773537), (9412, 2133490), (11765, 1706792), (18824, 1066745), (23530, 853396), (47060, 426698), (94120, 213349)]