20708584

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:119

約数の個数: 72

約数和(自身を含む): 45506610

約数和(自身を除く): 24798026

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 53, 68, 104, 106, 136, 169, 212, 221, 289, 338, 424, 442, 578, 676, 689, 884, 901, 1156, 1352, 1378, 1768, 1802, 2312, 2756, 2873, 3604, 3757, 5512, 5746, 7208, 7514, 8957, 11492, 11713, 15028, 15317, 17914, 22984, 23426, 30056, 30634, 35828, 46852, 48841, 61268, 71656, 93704, 97682, 122536, 152269, 195364, 199121, 304538, 390728, 398242, 609076, 796484, 1218152, 1592968, 2588573, 5177146, 10354292, 20708584]

約数ペア:

[(1, 20708584), (2, 10354292), (4, 5177146), (8, 2588573), (13, 1592968), (17, 1218152), (26, 796484), (34, 609076), (52, 398242), (53, 390728), (68, 304538), (104, 199121), (106, 195364), (136, 152269), (169, 122536), (212, 97682), (221, 93704), (289, 71656), (338, 61268), (424, 48841), (442, 46852), (578, 35828), (676, 30634), (689, 30056), (884, 23426), (901, 22984), (1156, 17914), (1352, 15317), (1378, 15028), (1768, 11713), (1802, 11492), (2312, 8957), (2756, 7514), (2873, 7208), (3604, 5746), (3757, 5512)]