18348920

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{709}}^1$

素因数の和:1367

約数の個数: 32

約数和(自身を含む): 41407200

約数和(自身を除く): 23058280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 709, 1294, 1418, 2588, 2836, 3235, 3545, 5176, 5672, 6470, 7090, 12940, 14180, 25880, 28360, 458723, 917446, 1834892, 2293615, 3669784, 4587230, 9174460, 18348920]

約数ペア:

[(1, 18348920), (2, 9174460), (4, 4587230), (5, 3669784), (8, 2293615), (10, 1834892), (20, 917446), (40, 458723), (647, 28360), (709, 25880), (1294, 14180), (1418, 12940), (2588, 7090), (2836, 6470), (3235, 5672), (3545, 5176)]