21605955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{593}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 39688704

約数和(自身を除く): 18082749

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 347, 593, 1041, 1735, 1779, 2429, 2965, 4151, 5205, 7287, 8895, 12145, 12453, 20755, 36435, 62265, 205771, 617313, 1028855, 1440397, 3086565, 4321191, 7201985, 21605955]

約数ペア:

[(1, 21605955), (3, 7201985), (5, 4321191), (7, 3086565), (15, 1440397), (21, 1028855), (35, 617313), (105, 205771), (347, 62265), (593, 36435), (1041, 20755), (1735, 12453), (1779, 12145), (2429, 8895), (2965, 7287), (4151, 5205)]