20886580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 52778880

約数和(自身を除く): 31892300

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 67, 109, 110, 130, 134, 143, 218, 220, 260, 268, 286, 335, 436, 545, 572, 670, 715, 737, 871, 1090, 1199, 1340, 1417, 1430, 1474, 1742, 2180, 2398, 2834, 2860, 2948, 3484, 3685, 4355, 4796, 5668, 5995, 7085, 7303, 7370, 8710, 9581, 11990, 14170, 14606, 14740, 15587, 17420, 19162, 23980, 28340, 29212, 31174, 36515, 38324, 47905, 62348, 73030, 77935, 80333, 94939, 95810, 146060, 155870, 160666, 189878, 191620, 311740, 321332, 379756, 401665, 474695, 803330, 949390, 1044329, 1606660, 1898780, 2088658, 4177316, 5221645, 10443290, 20886580]

約数ペア:

[(1, 20886580), (2, 10443290), (4, 5221645), (5, 4177316), (10, 2088658), (11, 1898780), (13, 1606660), (20, 1044329), (22, 949390), (26, 803330), (44, 474695), (52, 401665), (55, 379756), (65, 321332), (67, 311740), (109, 191620), (110, 189878), (130, 160666), (134, 155870), (143, 146060), (218, 95810), (220, 94939), (260, 80333), (268, 77935), (286, 73030), (335, 62348), (436, 47905), (545, 38324), (572, 36515), (670, 31174), (715, 29212), (737, 28340), (871, 23980), (1090, 19162), (1199, 17420), (1340, 15587), (1417, 14740), (1430, 14606), (1474, 14170), (1742, 11990), (2180, 9581), (2398, 8710), (2834, 7370), (2860, 7303), (2948, 7085), (3484, 5995), (3685, 5668), (4355, 4796)]