21451684

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{1181}}^1$

素因数の和:1443

約数の個数: 24

約数和(自身を含む): 39715200

約数和(自身を除く): 18263516

約数列:

[1, 2, 4, 19, 38, 76, 239, 478, 956, 1181, 2362, 4541, 4724, 9082, 18164, 22439, 44878, 89756, 282259, 564518, 1129036, 5362921, 10725842, 21451684]

約数ペア:

[(1, 21451684), (2, 10725842), (4, 5362921), (19, 1129036), (38, 564518), (76, 282259), (239, 89756), (478, 44878), (956, 22439), (1181, 18164), (2362, 9082), (4541, 4724)]