639778810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{252877}}^1$

素因数の和:252918

約数の個数: 32

約数和(自身を含む): 1310919552

約数和(自身を除く): 671140742

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 252877, 505754, 1264385, 2528770, 2781647, 5563294, 5816171, 11632342, 13908235, 27816470, 29080855, 58161710, 63977881, 127955762, 319889405, 639778810]

約数ペア:

[(1, 639778810), (2, 319889405), (5, 127955762), (10, 63977881), (11, 58161710), (22, 29080855), (23, 27816470), (46, 13908235), (55, 11632342), (110, 5816171), (115, 5563294), (230, 2781647), (253, 2528770), (506, 1264385), (1265, 505754), (2530, 252877)]