21808160

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12391}}^1$

素因数の和:12417

約数の個数: 48

約数和(自身を含む): 56210112

約数和(自身を除く): 34401952

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12391, 24782, 49564, 61955, 99128, 123910, 136301, 198256, 247820, 272602, 396512, 495640, 545204, 681505, 991280, 1090408, 1363010, 1982560, 2180816, 2726020, 4361632, 5452040, 10904080, 21808160]

約数ペア:

[(1, 21808160), (2, 10904080), (4, 5452040), (5, 4361632), (8, 2726020), (10, 2180816), (11, 1982560), (16, 1363010), (20, 1090408), (22, 991280), (32, 681505), (40, 545204), (44, 495640), (55, 396512), (80, 272602), (88, 247820), (110, 198256), (160, 136301), (176, 123910), (220, 99128), (352, 61955), (440, 49564), (880, 24782), (1760, 12391)]