18783760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3307}}^1$

素因数の和:3391

約数の個数: 40

約数和(自身を含む): 44300736

約数和(自身を除く): 25516976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3307, 5680, 6614, 13228, 16535, 26456, 33070, 52912, 66140, 132280, 234797, 264560, 469594, 939188, 1173985, 1878376, 2347970, 3756752, 4695940, 9391880, 18783760]

約数ペア:

[(1, 18783760), (2, 9391880), (4, 4695940), (5, 3756752), (8, 2347970), (10, 1878376), (16, 1173985), (20, 939188), (40, 469594), (71, 264560), (80, 234797), (142, 132280), (284, 66140), (355, 52912), (568, 33070), (710, 26456), (1136, 16535), (1420, 13228), (2840, 6614), (3307, 5680)]