20979810

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:517

約数の個数: 80

約数和(自身を含む): 57499200

約数和(自身を除く): 36519390

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 59, 81, 90, 118, 135, 162, 177, 270, 295, 354, 405, 439, 531, 590, 810, 878, 885, 1062, 1317, 1593, 1770, 2195, 2634, 2655, 3186, 3951, 4390, 4779, 5310, 6585, 7902, 7965, 9558, 11853, 13170, 15930, 19755, 23706, 23895, 25901, 35559, 39510, 47790, 51802, 59265, 71118, 77703, 118530, 129505, 155406, 177795, 233109, 259010, 355590, 388515, 466218, 699327, 777030, 1165545, 1398654, 2097981, 2331090, 3496635, 4195962, 6993270, 10489905, 20979810]

約数ペア:

[(1, 20979810), (2, 10489905), (3, 6993270), (5, 4195962), (6, 3496635), (9, 2331090), (10, 2097981), (15, 1398654), (18, 1165545), (27, 777030), (30, 699327), (45, 466218), (54, 388515), (59, 355590), (81, 259010), (90, 233109), (118, 177795), (135, 155406), (162, 129505), (177, 118530), (270, 77703), (295, 71118), (354, 59265), (405, 51802), (439, 47790), (531, 39510), (590, 35559), (810, 25901), (878, 23895), (885, 23706), (1062, 19755), (1317, 15930), (1593, 13170), (1770, 11853), (2195, 9558), (2634, 7965), (2655, 7902), (3186, 6585), (3951, 5310), (4390, 4779)]