18520112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{331}}^1$

素因数の和:621

約数の個数: 40

約数和(自身を含む): 38903760

約数和(自身を除く): 20383648

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 269, 331, 538, 662, 1076, 1324, 2152, 2648, 3497, 4303, 4304, 5296, 6994, 8606, 13988, 17212, 27976, 34424, 55952, 68848, 89039, 178078, 356156, 712312, 1157507, 1424624, 2315014, 4630028, 9260056, 18520112]

約数ペア:

[(1, 18520112), (2, 9260056), (4, 4630028), (8, 2315014), (13, 1424624), (16, 1157507), (26, 712312), (52, 356156), (104, 178078), (208, 89039), (269, 68848), (331, 55952), (538, 34424), (662, 27976), (1076, 17212), (1324, 13988), (2152, 8606), (2648, 6994), (3497, 5296), (4303, 4304)]