20797533

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:670

約数の個数: 32

約数和(自身を含む): 32947200

約数和(自身を除く): 12149667

約数列:

[1, 3, 9, 19, 27, 57, 71, 171, 213, 513, 571, 639, 1349, 1713, 1917, 4047, 5139, 10849, 12141, 15417, 32547, 36423, 40541, 97641, 121623, 292923, 364869, 770279, 1094607, 2310837, 6932511, 20797533]

約数ペア:

[(1, 20797533), (3, 6932511), (9, 2310837), (19, 1094607), (27, 770279), (57, 364869), (71, 292923), (171, 121623), (213, 97641), (513, 40541), (571, 36423), (639, 32547), (1349, 15417), (1713, 12141), (1917, 10849), (4047, 5139)]