21499740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3853}}^1$

素因数の和:3899

約数の個数: 72

約数和(自身を含む): 67337088

約数和(自身を除く): 45837348

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3853, 5580, 7706, 11559, 15412, 19265, 23118, 34677, 38530, 46236, 57795, 69354, 77060, 115590, 119443, 138708, 173385, 231180, 238886, 346770, 358329, 477772, 597215, 693540, 716658, 1074987, 1194430, 1433316, 1791645, 2149974, 2388860, 3583290, 4299948, 5374935, 7166580, 10749870, 21499740]

約数ペア:

[(1, 21499740), (2, 10749870), (3, 7166580), (4, 5374935), (5, 4299948), (6, 3583290), (9, 2388860), (10, 2149974), (12, 1791645), (15, 1433316), (18, 1194430), (20, 1074987), (30, 716658), (31, 693540), (36, 597215), (45, 477772), (60, 358329), (62, 346770), (90, 238886), (93, 231180), (124, 173385), (155, 138708), (180, 119443), (186, 115590), (279, 77060), (310, 69354), (372, 57795), (465, 46236), (558, 38530), (620, 34677), (930, 23118), (1116, 19265), (1395, 15412), (1860, 11559), (2790, 7706), (3853, 5580)]