18915832

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{823}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 40713840

約数和(自身を除く): 21798008

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 169, 221, 338, 442, 676, 823, 884, 1352, 1646, 1768, 2873, 3292, 5746, 6584, 10699, 11492, 13991, 21398, 22984, 27982, 42796, 55964, 85592, 111928, 139087, 181883, 278174, 363766, 556348, 727532, 1112696, 1455064, 2364479, 4728958, 9457916, 18915832]

約数ペア:

[(1, 18915832), (2, 9457916), (4, 4728958), (8, 2364479), (13, 1455064), (17, 1112696), (26, 727532), (34, 556348), (52, 363766), (68, 278174), (104, 181883), (136, 139087), (169, 111928), (221, 85592), (338, 55964), (442, 42796), (676, 27982), (823, 22984), (884, 21398), (1352, 13991), (1646, 11492), (1768, 10699), (2873, 6584), (3292, 5746)]