20947818

素因数分解:

$2^1\times 3^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{487}}^1$

素因数の和:666

約数の個数: 32

約数和(自身を含む): 43006464

約数和(自身を除く): 22058646

約数列:

[1, 2, 3, 6, 67, 107, 134, 201, 214, 321, 402, 487, 642, 974, 1461, 2922, 7169, 14338, 21507, 32629, 43014, 52109, 65258, 97887, 104218, 156327, 195774, 312654, 3491303, 6982606, 10473909, 20947818]

約数ペア:

[(1, 20947818), (2, 10473909), (3, 6982606), (6, 3491303), (67, 312654), (107, 195774), (134, 156327), (201, 104218), (214, 97887), (321, 65258), (402, 52109), (487, 43014), (642, 32629), (974, 21507), (1461, 14338), (2922, 7169)]