21011895

素因数分解:

$3^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2039}}^1$

素因数の和:2279

約数の個数: 24

約数和(自身を含む): 36597600

約数和(自身を除く): 15585705

約数列:

[1, 3, 5, 9, 15, 45, 229, 687, 1145, 2039, 2061, 3435, 6117, 10195, 10305, 18351, 30585, 91755, 466931, 1400793, 2334655, 4202379, 7003965, 21011895]

約数ペア:

[(1, 21011895), (3, 7003965), (5, 4202379), (9, 2334655), (15, 1400793), (45, 466931), (229, 91755), (687, 30585), (1145, 18351), (2039, 10305), (2061, 10195), (3435, 6117)]