21339351

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{491}}^1$

素因数の和:947

約数の個数: 24

約数和(自身を含む): 33770880

約数和(自身を除く): 12431529

約数列:

[1, 3, 9, 11, 33, 99, 439, 491, 1317, 1473, 3951, 4419, 4829, 5401, 14487, 16203, 43461, 48609, 215549, 646647, 1939941, 2371039, 7113117, 21339351]

約数ペア:

[(1, 21339351), (3, 7113117), (9, 2371039), (11, 1939941), (33, 646647), (99, 215549), (439, 48609), (491, 43461), (1317, 16203), (1473, 14487), (3951, 5401), (4419, 4829)]