18018790

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 33390720

約数和(自身を除く): 15371930

約数列:

[1, 2, 5, 10, 61, 109, 122, 218, 271, 305, 542, 545, 610, 1090, 1355, 2710, 6649, 13298, 16531, 29539, 33062, 33245, 59078, 66490, 82655, 147695, 165310, 295390, 1801879, 3603758, 9009395, 18018790]

約数ペア:

[(1, 18018790), (2, 9009395), (5, 3603758), (10, 1801879), (61, 295390), (109, 165310), (122, 147695), (218, 82655), (271, 66490), (305, 59078), (542, 33245), (545, 33062), (610, 29539), (1090, 16531), (1355, 13298), (2710, 6649)]