72972440

素因数分解:

$2^3\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{1663}}^1$

素因数の和:2771

約数の個数: 32

約数和(自身を含む): 164436480

約数和(自身を除く): 91464040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1097, 1663, 2194, 3326, 4388, 5485, 6652, 8315, 8776, 10970, 13304, 16630, 21940, 33260, 43880, 66520, 1824311, 3648622, 7297244, 9121555, 14594488, 18243110, 36486220, 72972440]

約数ペア:

[(1, 72972440), (2, 36486220), (4, 18243110), (5, 14594488), (8, 9121555), (10, 7297244), (20, 3648622), (40, 1824311), (1097, 66520), (1663, 43880), (2194, 33260), (3326, 21940), (4388, 16630), (5485, 13304), (6652, 10970), (8315, 8776)]