20965920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1409}}^1$

素因数の和:1458

約数の個数: 96

約数和(自身を含む): 68221440

約数和(自身を除く): 47255520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 80, 93, 96, 120, 124, 155, 160, 186, 240, 248, 310, 372, 465, 480, 496, 620, 744, 930, 992, 1240, 1409, 1488, 1860, 2480, 2818, 2976, 3720, 4227, 4960, 5636, 7045, 7440, 8454, 11272, 14090, 14880, 16908, 21135, 22544, 28180, 33816, 42270, 43679, 45088, 56360, 67632, 84540, 87358, 112720, 131037, 135264, 169080, 174716, 218395, 225440, 262074, 338160, 349432, 436790, 524148, 655185, 676320, 698864, 873580, 1048296, 1310370, 1397728, 1747160, 2096592, 2620740, 3494320, 4193184, 5241480, 6988640, 10482960, 20965920]

約数ペア:

[(1, 20965920), (2, 10482960), (3, 6988640), (4, 5241480), (5, 4193184), (6, 3494320), (8, 2620740), (10, 2096592), (12, 1747160), (15, 1397728), (16, 1310370), (20, 1048296), (24, 873580), (30, 698864), (31, 676320), (32, 655185), (40, 524148), (48, 436790), (60, 349432), (62, 338160), (80, 262074), (93, 225440), (96, 218395), (120, 174716), (124, 169080), (155, 135264), (160, 131037), (186, 112720), (240, 87358), (248, 84540), (310, 67632), (372, 56360), (465, 45088), (480, 43679), (496, 42270), (620, 33816), (744, 28180), (930, 22544), (992, 21135), (1240, 16908), (1409, 14880), (1488, 14090), (1860, 11272), (2480, 8454), (2818, 7440), (2976, 7045), (3720, 5636), (4227, 4960)]