7900720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1619}}^1$

素因数の和:1693

約数の個数: 40

約数和(自身を含む): 18681840

約数和(自身を除く): 10781120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 1619, 2440, 3238, 4880, 6476, 8095, 12952, 16190, 25904, 32380, 64760, 98759, 129520, 197518, 395036, 493795, 790072, 987590, 1580144, 1975180, 3950360, 7900720]

約数ペア:

[(1, 7900720), (2, 3950360), (4, 1975180), (5, 1580144), (8, 987590), (10, 790072), (16, 493795), (20, 395036), (40, 197518), (61, 129520), (80, 98759), (122, 64760), (244, 32380), (305, 25904), (488, 16190), (610, 12952), (976, 8095), (1220, 6476), (1619, 4880), (2440, 3238)]