21379930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{14951}}^1$

素因数の和:14982

約数の個数: 32

約数和(自身を含む): 45214848

約数和(自身を除く): 23834918

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 14951, 29902, 74755, 149510, 164461, 194363, 328922, 388726, 822305, 971815, 1644610, 1943630, 2137993, 4275986, 10689965, 21379930]

約数ペア:

[(1, 21379930), (2, 10689965), (5, 4275986), (10, 2137993), (11, 1943630), (13, 1644610), (22, 971815), (26, 822305), (55, 388726), (65, 328922), (110, 194363), (130, 164461), (143, 149510), (286, 74755), (715, 29902), (1430, 14951)]