20051330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 42311808

約数和(自身を除く): 22260478

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 43, 65, 85, 86, 130, 170, 211, 215, 221, 422, 430, 442, 559, 731, 1055, 1105, 1118, 1462, 2110, 2210, 2743, 2795, 3587, 3655, 5486, 5590, 7174, 7310, 9073, 9503, 13715, 17935, 18146, 19006, 27430, 35870, 45365, 46631, 47515, 90730, 93262, 95030, 117949, 154241, 233155, 235898, 308482, 466310, 589745, 771205, 1179490, 1542410, 2005133, 4010266, 10025665, 20051330]

約数ペア:

[(1, 20051330), (2, 10025665), (5, 4010266), (10, 2005133), (13, 1542410), (17, 1179490), (26, 771205), (34, 589745), (43, 466310), (65, 308482), (85, 235898), (86, 233155), (130, 154241), (170, 117949), (211, 95030), (215, 93262), (221, 90730), (422, 47515), (430, 46631), (442, 45365), (559, 35870), (731, 27430), (1055, 19006), (1105, 18146), (1118, 17935), (1462, 13715), (2110, 9503), (2210, 9073), (2743, 7310), (2795, 7174), (3587, 5590), (3655, 5486)]