19956699

素因数分解:

$3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{577}}^1$

素因数の和:657

約数の個数: 40

約数和(自身を含む): 34689248

約数和(自身を除く): 14732549

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 427, 549, 567, 577, 1281, 1647, 1731, 3843, 4039, 4941, 5193, 11529, 12117, 15579, 34587, 35197, 36351, 46737, 105591, 109053, 246379, 316773, 327159, 739137, 950319, 2217411, 2850957, 6652233, 19956699]

約数ペア:

[(1, 19956699), (3, 6652233), (7, 2850957), (9, 2217411), (21, 950319), (27, 739137), (61, 327159), (63, 316773), (81, 246379), (183, 109053), (189, 105591), (427, 46737), (549, 36351), (567, 35197), (577, 34587), (1281, 15579), (1647, 12117), (1731, 11529), (3843, 5193), (4039, 4941)]