28661367

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2477}}^1$

素因数の和:2535

約数の個数: 32

約数和(自身を含む): 47577600

約数和(自身を除く): 18916233

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 2477, 3857, 7431, 11571, 17339, 47063, 52017, 71833, 141189, 215499, 329441, 502831, 988323, 1364827, 1508493, 4094481, 9553789, 28661367]

約数ペア:

[(1, 28661367), (3, 9553789), (7, 4094481), (19, 1508493), (21, 1364827), (29, 988323), (57, 502831), (87, 329441), (133, 215499), (203, 141189), (399, 71833), (551, 52017), (609, 47063), (1653, 17339), (2477, 11571), (3857, 7431)]