21487560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{743}}^1$

素因数の和:998

約数の個数: 64

約数和(自身を含む): 64817280

約数和(自身を除く): 43329720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 241, 482, 723, 743, 964, 1205, 1446, 1486, 1928, 2229, 2410, 2892, 2972, 3615, 3715, 4458, 4820, 5784, 5944, 7230, 7430, 8916, 9640, 11145, 14460, 14860, 17832, 22290, 28920, 29720, 44580, 89160, 179063, 358126, 537189, 716252, 895315, 1074378, 1432504, 1790630, 2148756, 2685945, 3581260, 4297512, 5371890, 7162520, 10743780, 21487560]

約数ペア:

[(1, 21487560), (2, 10743780), (3, 7162520), (4, 5371890), (5, 4297512), (6, 3581260), (8, 2685945), (10, 2148756), (12, 1790630), (15, 1432504), (20, 1074378), (24, 895315), (30, 716252), (40, 537189), (60, 358126), (120, 179063), (241, 89160), (482, 44580), (723, 29720), (743, 28920), (964, 22290), (1205, 17832), (1446, 14860), (1486, 14460), (1928, 11145), (2229, 9640), (2410, 8916), (2892, 7430), (2972, 7230), (3615, 5944), (3715, 5784), (4458, 4820)]