18766640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13799}}^1$

素因数の和:13829

約数の個数: 40

約数和(自身を含む): 46202400

約数和(自身を除く): 27435760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13799, 27598, 55196, 68995, 110392, 137990, 220784, 234583, 275980, 469166, 551960, 938332, 1103920, 1172915, 1876664, 2345830, 3753328, 4691660, 9383320, 18766640]

約数ペア:

[(1, 18766640), (2, 9383320), (4, 4691660), (5, 3753328), (8, 2345830), (10, 1876664), (16, 1172915), (17, 1103920), (20, 938332), (34, 551960), (40, 469166), (68, 275980), (80, 234583), (85, 220784), (136, 137990), (170, 110392), (272, 68995), (340, 55196), (680, 27598), (1360, 13799)]