321720976

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{648631}}^1$

素因数の和:648670

約数の個数: 20

約数和(自身を含む): 643442944

約数和(自身を除く): 321721968

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 648631, 1297262, 2594524, 5189048, 10378096, 20107561, 40215122, 80430244, 160860488, 321720976]

約数ペア:

[(1, 321720976), (2, 160860488), (4, 80430244), (8, 40215122), (16, 20107561), (31, 10378096), (62, 5189048), (124, 2594524), (248, 1297262), (496, 648631)]