28142289

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2441}}^1$

素因数の和:2518

約数の個数: 32

約数和(自身を含む): 48449280

約数和(自身を除く): 20306991

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1647, 2441, 3843, 7323, 11529, 17087, 21969, 51261, 65907, 148901, 153783, 446703, 461349, 1042307, 1340109, 3126921, 4020327, 9380763, 28142289]

約数ペア:

[(1, 28142289), (3, 9380763), (7, 4020327), (9, 3126921), (21, 1340109), (27, 1042307), (61, 461349), (63, 446703), (183, 153783), (189, 148901), (427, 65907), (549, 51261), (1281, 21969), (1647, 17087), (2441, 11529), (3843, 7323)]