18756556

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{227}}^2$

素因数の和:478

約数の個数: 36

約数和(自身を含む): 40577488

約数和(自身を除く): 21820932

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 227, 364, 454, 908, 1589, 2951, 3178, 5902, 6356, 11804, 20657, 41314, 51529, 82628, 103058, 206116, 360703, 669877, 721406, 1339754, 1442812, 2679508, 4689139, 9378278, 18756556]

約数ペア:

[(1, 18756556), (2, 9378278), (4, 4689139), (7, 2679508), (13, 1442812), (14, 1339754), (26, 721406), (28, 669877), (52, 360703), (91, 206116), (182, 103058), (227, 82628), (364, 51529), (454, 41314), (908, 20657), (1589, 11804), (2951, 6356), (3178, 5902)]