21192010

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{709}}^1$

素因数の和:791

約数の個数: 48

約数和(自身を含む): 45164520

約数和(自身を除く): 23972510

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 61, 70, 98, 122, 245, 305, 427, 490, 610, 709, 854, 1418, 2135, 2989, 3545, 4270, 4963, 5978, 7090, 9926, 14945, 24815, 29890, 34741, 43249, 49630, 69482, 86498, 173705, 216245, 302743, 347410, 432490, 605486, 1513715, 2119201, 3027430, 4238402, 10596005, 21192010]

約数ペア:

[(1, 21192010), (2, 10596005), (5, 4238402), (7, 3027430), (10, 2119201), (14, 1513715), (35, 605486), (49, 432490), (61, 347410), (70, 302743), (98, 216245), (122, 173705), (245, 86498), (305, 69482), (427, 49630), (490, 43249), (610, 34741), (709, 29890), (854, 24815), (1418, 14945), (2135, 9926), (2989, 7090), (3545, 5978), (4270, 4963)]