20317856

素因数分解:

$2^5\times {\mathrm{13}}^3\times {\mathrm{17}}^2$

素因数の和:83

約数の個数: 72

約数和(自身を含む): 46031580

約数和(自身を除く): 25713724

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 169, 208, 221, 272, 289, 338, 416, 442, 544, 578, 676, 884, 1156, 1352, 1768, 2197, 2312, 2704, 2873, 3536, 3757, 4394, 4624, 5408, 5746, 7072, 7514, 8788, 9248, 11492, 15028, 17576, 22984, 30056, 35152, 37349, 45968, 48841, 60112, 70304, 74698, 91936, 97682, 120224, 149396, 195364, 298792, 390728, 597584, 634933, 781456, 1195168, 1269866, 1562912, 2539732, 5079464, 10158928, 20317856]

約数ペア:

[(1, 20317856), (2, 10158928), (4, 5079464), (8, 2539732), (13, 1562912), (16, 1269866), (17, 1195168), (26, 781456), (32, 634933), (34, 597584), (52, 390728), (68, 298792), (104, 195364), (136, 149396), (169, 120224), (208, 97682), (221, 91936), (272, 74698), (289, 70304), (338, 60112), (416, 48841), (442, 45968), (544, 37349), (578, 35152), (676, 30056), (884, 22984), (1156, 17576), (1352, 15028), (1768, 11492), (2197, 9248), (2312, 8788), (2704, 7514), (2873, 7072), (3536, 5746), (3757, 5408), (4394, 4624)]