20456289

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5323}}^1$

素因数の和:5397

約数の個数: 24

約数和(自身を含む): 34329152

約数和(自身を除く): 13872863

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5323, 15969, 37261, 47907, 111783, 324703, 335349, 974109, 2272921, 2922327, 6818763, 20456289]

約数ペア:

[(1, 20456289), (3, 6818763), (7, 2922327), (9, 2272921), (21, 974109), (61, 335349), (63, 324703), (183, 111783), (427, 47907), (549, 37261), (1281, 15969), (3843, 5323)]