21187560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{383}}^1\times {\mathrm{461}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 63866880

約数和(自身を除く): 42679320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 383, 461, 766, 922, 1149, 1383, 1532, 1844, 1915, 2298, 2305, 2766, 3064, 3688, 3830, 4596, 4610, 5532, 5745, 6915, 7660, 9192, 9220, 11064, 11490, 13830, 15320, 18440, 22980, 27660, 45960, 55320, 176563, 353126, 529689, 706252, 882815, 1059378, 1412504, 1765630, 2118756, 2648445, 3531260, 4237512, 5296890, 7062520, 10593780, 21187560]

約数ペア:

[(1, 21187560), (2, 10593780), (3, 7062520), (4, 5296890), (5, 4237512), (6, 3531260), (8, 2648445), (10, 2118756), (12, 1765630), (15, 1412504), (20, 1059378), (24, 882815), (30, 706252), (40, 529689), (60, 353126), (120, 176563), (383, 55320), (461, 45960), (766, 27660), (922, 22980), (1149, 18440), (1383, 15320), (1532, 13830), (1844, 11490), (1915, 11064), (2298, 9220), (2305, 9192), (2766, 7660), (3064, 6915), (3688, 5745), (3830, 5532), (4596, 4610)]