81558100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1459}}^1$

素因数の和:1529

約数の個数: 72

約数和(自身を含む): 195161120

約数和(自身を除く): 113603020

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 130, 172, 215, 260, 325, 430, 559, 650, 860, 1075, 1118, 1300, 1459, 2150, 2236, 2795, 2918, 4300, 5590, 5836, 7295, 11180, 13975, 14590, 18967, 27950, 29180, 36475, 37934, 55900, 62737, 72950, 75868, 94835, 125474, 145900, 189670, 250948, 313685, 379340, 474175, 627370, 815581, 948350, 1254740, 1568425, 1631162, 1896700, 3136850, 3262324, 4077905, 6273700, 8155810, 16311620, 20389525, 40779050, 81558100]

約数ペア:

[(1, 81558100), (2, 40779050), (4, 20389525), (5, 16311620), (10, 8155810), (13, 6273700), (20, 4077905), (25, 3262324), (26, 3136850), (43, 1896700), (50, 1631162), (52, 1568425), (65, 1254740), (86, 948350), (100, 815581), (130, 627370), (172, 474175), (215, 379340), (260, 313685), (325, 250948), (430, 189670), (559, 145900), (650, 125474), (860, 94835), (1075, 75868), (1118, 72950), (1300, 62737), (1459, 55900), (2150, 37934), (2236, 36475), (2795, 29180), (2918, 27950), (4300, 18967), (5590, 14590), (5836, 13975), (7295, 11180)]