20121480

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:652

約数の個数: 128

約数和(自身を含む): 69350400

約数和(自身を除く): 49228920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 90, 93, 108, 120, 124, 135, 155, 180, 186, 216, 248, 270, 279, 310, 360, 372, 465, 540, 558, 601, 620, 744, 837, 930, 1080, 1116, 1202, 1240, 1395, 1674, 1803, 1860, 2232, 2404, 2790, 3005, 3348, 3606, 3720, 4185, 4808, 5409, 5580, 6010, 6696, 7212, 8370, 9015, 10818, 11160, 12020, 14424, 16227, 16740, 18030, 18631, 21636, 24040, 27045, 32454, 33480, 36060, 37262, 43272, 54090, 55893, 64908, 72120, 74524, 81135, 93155, 108180, 111786, 129816, 149048, 162270, 167679, 186310, 216360, 223572, 279465, 324540, 335358, 372620, 447144, 503037, 558930, 649080, 670716, 745240, 838395, 1006074, 1117860, 1341432, 1676790, 2012148, 2235720, 2515185, 3353580, 4024296, 5030370, 6707160, 10060740, 20121480]

約数ペア:

[(1, 20121480), (2, 10060740), (3, 6707160), (4, 5030370), (5, 4024296), (6, 3353580), (8, 2515185), (9, 2235720), (10, 2012148), (12, 1676790), (15, 1341432), (18, 1117860), (20, 1006074), (24, 838395), (27, 745240), (30, 670716), (31, 649080), (36, 558930), (40, 503037), (45, 447144), (54, 372620), (60, 335358), (62, 324540), (72, 279465), (90, 223572), (93, 216360), (108, 186310), (120, 167679), (124, 162270), (135, 149048), (155, 129816), (180, 111786), (186, 108180), (216, 93155), (248, 81135), (270, 74524), (279, 72120), (310, 64908), (360, 55893), (372, 54090), (465, 43272), (540, 37262), (558, 36060), (601, 33480), (620, 32454), (744, 27045), (837, 24040), (930, 21636), (1080, 18631), (1116, 18030), (1202, 16740), (1240, 16227), (1395, 14424), (1674, 12020), (1803, 11160), (1860, 10818), (2232, 9015), (2404, 8370), (2790, 7212), (3005, 6696), (3348, 6010), (3606, 5580), (3720, 5409), (4185, 4808)]