28622727

素因数分解:

$3^6\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:175

約数の個数: 56

約数和(自身を含む): 50365440

約数和(自身を除く): 21742713

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 79, 81, 189, 213, 237, 243, 497, 553, 567, 639, 711, 729, 1491, 1659, 1701, 1917, 2133, 4473, 4977, 5103, 5609, 5751, 6399, 13419, 14931, 16827, 17253, 19197, 39263, 40257, 44793, 50481, 51759, 57591, 117789, 120771, 134379, 151443, 353367, 362313, 403137, 454329, 1060101, 1362987, 3180303, 4088961, 9540909, 28622727]

約数ペア:

[(1, 28622727), (3, 9540909), (7, 4088961), (9, 3180303), (21, 1362987), (27, 1060101), (63, 454329), (71, 403137), (79, 362313), (81, 353367), (189, 151443), (213, 134379), (237, 120771), (243, 117789), (497, 57591), (553, 51759), (567, 50481), (639, 44793), (711, 40257), (729, 39263), (1491, 19197), (1659, 17253), (1701, 16827), (1917, 14931), (2133, 13419), (4473, 6399), (4977, 5751), (5103, 5609)]