20909954

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:434

約数の個数: 32

約数和(自身を含む): 35259840

約数和(自身を除く): 14349886

約数列:

[1, 2, 13, 26, 43, 59, 86, 118, 317, 559, 634, 767, 1118, 1534, 2537, 4121, 5074, 8242, 13631, 18703, 27262, 32981, 37406, 65962, 177203, 243139, 354406, 486278, 804229, 1608458, 10454977, 20909954]

約数ペア:

[(1, 20909954), (2, 10454977), (13, 1608458), (26, 804229), (43, 486278), (59, 354406), (86, 243139), (118, 177203), (317, 65962), (559, 37406), (634, 32981), (767, 27262), (1118, 18703), (1534, 13631), (2537, 8242), (4121, 5074)]