20767960

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3307}}^1$

素因数の和:3475

約数の個数: 32

約数和(自身を含む): 47039760

約数和(自身を除く): 26271800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 3307, 6280, 6614, 13228, 16535, 26456, 33070, 66140, 132280, 519199, 1038398, 2076796, 2595995, 4153592, 5191990, 10383980, 20767960]

約数ペア:

[(1, 20767960), (2, 10383980), (4, 5191990), (5, 4153592), (8, 2595995), (10, 2076796), (20, 1038398), (40, 519199), (157, 132280), (314, 66140), (628, 33070), (785, 26456), (1256, 16535), (1570, 13228), (3140, 6614), (3307, 6280)]