66666780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{123457}}^1$

素因数の和:123475

約数の個数: 48

約数和(自身を含む): 207409440

約数和(自身を除く): 140742660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 123457, 246914, 370371, 493828, 617285, 740742, 1111113, 1234570, 1481484, 1851855, 2222226, 2469140, 3333339, 3703710, 4444452, 5555565, 6666678, 7407420, 11111130, 13333356, 16666695, 22222260, 33333390, 66666780]

約数ペア:

[(1, 66666780), (2, 33333390), (3, 22222260), (4, 16666695), (5, 13333356), (6, 11111130), (9, 7407420), (10, 6666678), (12, 5555565), (15, 4444452), (18, 3703710), (20, 3333339), (27, 2469140), (30, 2222226), (36, 1851855), (45, 1481484), (54, 1234570), (60, 1111113), (90, 740742), (108, 617285), (135, 493828), (180, 370371), (270, 246914), (540, 123457)]