21905440

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4721}}^1$

素因数の和:4765

約数の個数: 48

約数和(自身を含む): 53547480

約数和(自身を除く): 31642040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4640, 4721, 9442, 18884, 23605, 37768, 47210, 75536, 94420, 136909, 151072, 188840, 273818, 377680, 547636, 684545, 755360, 1095272, 1369090, 2190544, 2738180, 4381088, 5476360, 10952720, 21905440]

約数ペア:

[(1, 21905440), (2, 10952720), (4, 5476360), (5, 4381088), (8, 2738180), (10, 2190544), (16, 1369090), (20, 1095272), (29, 755360), (32, 684545), (40, 547636), (58, 377680), (80, 273818), (116, 188840), (145, 151072), (160, 136909), (232, 94420), (290, 75536), (464, 47210), (580, 37768), (928, 23605), (1160, 18884), (2320, 9442), (4640, 4721)]