21220740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3803}}^1$

素因数の和:3849

約数の個数: 72

約数和(自身を含む): 66463488

約数和(自身を除く): 45242748

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, 3803, 5580, 7606, 11409, 15212, 19015, 22818, 34227, 38030, 45636, 57045, 68454, 76060, 114090, 117893, 136908, 171135, 228180, 235786, 342270, 353679, 471572, 589465, 684540, 707358, 1061037, 1178930, 1414716, 1768395, 2122074, 2357860, 3536790, 4244148, 5305185, 7073580, 10610370, 21220740]

約数ペア:

[(1, 21220740), (2, 10610370), (3, 7073580), (4, 5305185), (5, 4244148), (6, 3536790), (9, 2357860), (10, 2122074), (12, 1768395), (15, 1414716), (18, 1178930), (20, 1061037), (30, 707358), (31, 684540), (36, 589465), (45, 471572), (60, 353679), (62, 342270), (90, 235786), (93, 228180), (124, 171135), (155, 136908), (180, 117893), (186, 114090), (279, 76060), (310, 68454), (372, 57045), (465, 45636), (558, 38030), (620, 34227), (930, 22818), (1116, 19015), (1395, 15212), (1860, 11409), (2790, 7606), (3803, 5580)]