18935985

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{431}}^1$

素因数の和:569

約数の個数: 32

約数和(自身を含む): 31726080

約数和(自身を除く): 12790095

約数列:

[1, 3, 5, 15, 29, 87, 101, 145, 303, 431, 435, 505, 1293, 1515, 2155, 2929, 6465, 8787, 12499, 14645, 37497, 43531, 43935, 62495, 130593, 187485, 217655, 652965, 1262399, 3787197, 6311995, 18935985]

約数ペア:

[(1, 18935985), (3, 6311995), (5, 3787197), (15, 1262399), (29, 652965), (87, 217655), (101, 187485), (145, 130593), (303, 62495), (431, 43935), (435, 43531), (505, 37497), (1293, 14645), (1515, 12499), (2155, 8787), (2929, 6465)]