18464561

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:149

約数の個数: 32

約数和(自身を含む): 22118400

約数和(自身を除く): 3653839

約数列:

[1, 19, 23, 29, 31, 47, 437, 551, 589, 667, 713, 893, 899, 1081, 1363, 1457, 12673, 13547, 17081, 20539, 20677, 25897, 27683, 31349, 33511, 42253, 392863, 595631, 636709, 802807, 971819, 18464561]

約数ペア:

[(1, 18464561), (19, 971819), (23, 802807), (29, 636709), (31, 595631), (47, 392863), (437, 42253), (551, 33511), (589, 31349), (667, 27683), (713, 25897), (893, 20677), (899, 20539), (1081, 17081), (1363, 13547), (1457, 12673)]