18106640

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{947}}^1$

素因数の和:1199

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 24212080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 947, 956, 1195, 1894, 1912, 2390, 3788, 3824, 4735, 4780, 7576, 9470, 9560, 15152, 18940, 19120, 37880, 75760, 226333, 452666, 905332, 1131665, 1810664, 2263330, 3621328, 4526660, 9053320, 18106640]

約数ペア:

[(1, 18106640), (2, 9053320), (4, 4526660), (5, 3621328), (8, 2263330), (10, 1810664), (16, 1131665), (20, 905332), (40, 452666), (80, 226333), (239, 75760), (478, 37880), (947, 19120), (956, 18940), (1195, 15152), (1894, 9560), (1912, 9470), (2390, 7576), (3788, 4780), (3824, 4735)]