204861640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{165211}}^1$

素因数の和:165253

約数の個数: 32

約数和(自身を含む): 475810560

約数和(自身を除く): 270948920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 165211, 330422, 660844, 826055, 1321688, 1652110, 3304220, 5121541, 6608440, 10243082, 20486164, 25607705, 40972328, 51215410, 102430820, 204861640]

約数ペア:

[(1, 204861640), (2, 102430820), (4, 51215410), (5, 40972328), (8, 25607705), (10, 20486164), (20, 10243082), (31, 6608440), (40, 5121541), (62, 3304220), (124, 1652110), (155, 1321688), (248, 826055), (310, 660844), (620, 330422), (1240, 165211)]