21726340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63901}}^1$

素因数の和:63927

約数の個数: 24

約数和(自身を含む): 48309912

約数和(自身を除く): 26583572

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63901, 127802, 255604, 319505, 639010, 1086317, 1278020, 2172634, 4345268, 5431585, 10863170, 21726340]

約数ペア:

[(1, 21726340), (2, 10863170), (4, 5431585), (5, 4345268), (10, 2172634), (17, 1278020), (20, 1086317), (34, 639010), (68, 319505), (85, 255604), (170, 127802), (340, 63901)]