21960280

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11681}}^1$

素因数の和:11739

約数の個数: 32

約数和(自身を含む): 50466240

約数和(自身を除く): 28505960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11681, 23362, 46724, 58405, 93448, 116810, 233620, 467240, 549007, 1098014, 2196028, 2745035, 4392056, 5490070, 10980140, 21960280]

約数ペア:

[(1, 21960280), (2, 10980140), (4, 5490070), (5, 4392056), (8, 2745035), (10, 2196028), (20, 1098014), (40, 549007), (47, 467240), (94, 233620), (188, 116810), (235, 93448), (376, 58405), (470, 46724), (940, 23362), (1880, 11681)]