20134640

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{647}}^1$

素因数の和:1049

約数の個数: 40

約数和(自身を含む): 47005920

約数和(自身を除く): 26871280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 647, 778, 1294, 1556, 1945, 2588, 3112, 3235, 3890, 5176, 6224, 6470, 7780, 10352, 12940, 15560, 25880, 31120, 51760, 251683, 503366, 1006732, 1258415, 2013464, 2516830, 4026928, 5033660, 10067320, 20134640]

約数ペア:

[(1, 20134640), (2, 10067320), (4, 5033660), (5, 4026928), (8, 2516830), (10, 2013464), (16, 1258415), (20, 1006732), (40, 503366), (80, 251683), (389, 51760), (647, 31120), (778, 25880), (1294, 15560), (1556, 12940), (1945, 10352), (2588, 7780), (3112, 6470), (3235, 6224), (3890, 5176)]