18940428

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{40471}}^1$

素因数の和:40494

約数の個数: 36

約数和(自身を含む): 51561328

約数和(自身を除く): 32620900

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 40471, 80942, 121413, 161884, 242826, 364239, 485652, 526123, 728478, 1052246, 1456956, 1578369, 2104492, 3156738, 4735107, 6313476, 9470214, 18940428]

約数ペア:

[(1, 18940428), (2, 9470214), (3, 6313476), (4, 4735107), (6, 3156738), (9, 2104492), (12, 1578369), (13, 1456956), (18, 1052246), (26, 728478), (36, 526123), (39, 485652), (52, 364239), (78, 242826), (117, 161884), (156, 121413), (234, 80942), (468, 40471)]