20919328

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:737

約数の個数: 48

約数和(自身を含む): 44041536

約数和(自身を除く): 23122208

約数列:

[1, 2, 4, 8, 16, 23, 32, 43, 46, 86, 92, 172, 184, 344, 368, 661, 688, 736, 989, 1322, 1376, 1978, 2644, 3956, 5288, 7912, 10576, 15203, 15824, 21152, 28423, 30406, 31648, 56846, 60812, 113692, 121624, 227384, 243248, 454768, 486496, 653729, 909536, 1307458, 2614916, 5229832, 10459664, 20919328]

約数ペア:

[(1, 20919328), (2, 10459664), (4, 5229832), (8, 2614916), (16, 1307458), (23, 909536), (32, 653729), (43, 486496), (46, 454768), (86, 243248), (92, 227384), (172, 121624), (184, 113692), (344, 60812), (368, 56846), (661, 31648), (688, 30406), (736, 28423), (989, 21152), (1322, 15824), (1376, 15203), (1978, 10576), (2644, 7912), (3956, 5288)]