20353190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 44174592

約数和(自身を除く): 23821402

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 43, 55, 65, 86, 110, 130, 143, 215, 286, 331, 430, 473, 559, 662, 715, 946, 1118, 1430, 1655, 2365, 2795, 3310, 3641, 4303, 4730, 5590, 6149, 7282, 8606, 12298, 14233, 18205, 21515, 28466, 30745, 36410, 43030, 47333, 61490, 71165, 94666, 142330, 156563, 185029, 236665, 313126, 370058, 473330, 782815, 925145, 1565630, 1850290, 2035319, 4070638, 10176595, 20353190]

約数ペア:

[(1, 20353190), (2, 10176595), (5, 4070638), (10, 2035319), (11, 1850290), (13, 1565630), (22, 925145), (26, 782815), (43, 473330), (55, 370058), (65, 313126), (86, 236665), (110, 185029), (130, 156563), (143, 142330), (215, 94666), (286, 71165), (331, 61490), (430, 47333), (473, 43030), (559, 36410), (662, 30745), (715, 28466), (946, 21515), (1118, 18205), (1430, 14233), (1655, 12298), (2365, 8606), (2795, 7282), (3310, 6149), (3641, 5590), (4303, 4730)]