21349890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1571}}^1$

素因数の和:1735

約数の個数: 48

約数和(自身を含む): 55912896

約数和(自身を除く): 34563006

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 151, 302, 453, 755, 906, 1359, 1510, 1571, 2265, 2718, 3142, 4530, 4713, 6795, 7855, 9426, 13590, 14139, 15710, 23565, 28278, 47130, 70695, 141390, 237221, 474442, 711663, 1186105, 1423326, 2134989, 2372210, 3558315, 4269978, 7116630, 10674945, 21349890]

約数ペア:

[(1, 21349890), (2, 10674945), (3, 7116630), (5, 4269978), (6, 3558315), (9, 2372210), (10, 2134989), (15, 1423326), (18, 1186105), (30, 711663), (45, 474442), (90, 237221), (151, 141390), (302, 70695), (453, 47130), (755, 28278), (906, 23565), (1359, 15710), (1510, 14139), (1571, 13590), (2265, 9426), (2718, 7855), (3142, 6795), (4530, 4713)]