21472990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 48936960

約数和(自身を除く): 27463970

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 79, 110, 154, 158, 353, 385, 395, 553, 706, 770, 790, 869, 1106, 1738, 1765, 2471, 2765, 3530, 3883, 4345, 4942, 5530, 6083, 7766, 8690, 12166, 12355, 19415, 24710, 27181, 27887, 30415, 38830, 54362, 55774, 60830, 135905, 139435, 195209, 271810, 278870, 306757, 390418, 613514, 976045, 1533785, 1952090, 2147299, 3067570, 4294598, 10736495, 21472990]

約数ペア:

[(1, 21472990), (2, 10736495), (5, 4294598), (7, 3067570), (10, 2147299), (11, 1952090), (14, 1533785), (22, 976045), (35, 613514), (55, 390418), (70, 306757), (77, 278870), (79, 271810), (110, 195209), (154, 139435), (158, 135905), (353, 60830), (385, 55774), (395, 54362), (553, 38830), (706, 30415), (770, 27887), (790, 27181), (869, 24710), (1106, 19415), (1738, 12355), (1765, 12166), (2471, 8690), (2765, 7766), (3530, 6083), (3883, 5530), (4345, 4942)]