505560520

素因数分解:

$2^3\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{6329}}^1$

素因数の和:8337

約数の個数: 32

約数和(自身を含む): 1138260600

約数和(自身を除く): 632700080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997, 3994, 6329, 7988, 9985, 12658, 15976, 19970, 25316, 31645, 39940, 50632, 63290, 79880, 126580, 253160, 12639013, 25278026, 50556052, 63195065, 101112104, 126390130, 252780260, 505560520]

約数ペア:

[(1, 505560520), (2, 252780260), (4, 126390130), (5, 101112104), (8, 63195065), (10, 50556052), (20, 25278026), (40, 12639013), (1997, 253160), (3994, 126580), (6329, 79880), (7988, 63290), (9985, 50632), (12658, 39940), (15976, 31645), (19970, 25316)]