21603940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63541}}^1$

素因数の和:63567

約数の個数: 24

約数和(自身を含む): 48037752

約数和(自身を除く): 26433812

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63541, 127082, 254164, 317705, 635410, 1080197, 1270820, 2160394, 4320788, 5400985, 10801970, 21603940]

約数ペア:

[(1, 21603940), (2, 10801970), (4, 5400985), (5, 4320788), (10, 2160394), (17, 1270820), (20, 1080197), (34, 635410), (68, 317705), (85, 254164), (170, 127082), (340, 63541)]