20493616

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 27315824

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 53, 88, 104, 106, 143, 169, 176, 208, 212, 286, 338, 424, 572, 583, 676, 689, 848, 1144, 1166, 1352, 1378, 1859, 2197, 2288, 2332, 2704, 2756, 3718, 4394, 4664, 5512, 7436, 7579, 8788, 8957, 9328, 11024, 14872, 15158, 17576, 17914, 24167, 29744, 30316, 35152, 35828, 48334, 60632, 71656, 96668, 98527, 116441, 121264, 143312, 193336, 197054, 232882, 386672, 394108, 465764, 788216, 931528, 1280851, 1576432, 1863056, 2561702, 5123404, 10246808, 20493616]

約数ペア:

[(1, 20493616), (2, 10246808), (4, 5123404), (8, 2561702), (11, 1863056), (13, 1576432), (16, 1280851), (22, 931528), (26, 788216), (44, 465764), (52, 394108), (53, 386672), (88, 232882), (104, 197054), (106, 193336), (143, 143312), (169, 121264), (176, 116441), (208, 98527), (212, 96668), (286, 71656), (338, 60632), (424, 48334), (572, 35828), (583, 35152), (676, 30316), (689, 29744), (848, 24167), (1144, 17914), (1166, 17576), (1352, 15158), (1378, 14872), (1859, 11024), (2197, 9328), (2288, 8957), (2332, 8788), (2704, 7579), (2756, 7436), (3718, 5512), (4394, 4664)]