2991440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{613}}^1$

素因数の和:687

約数の個数: 40

約数和(自身を含む): 7080648

約数和(自身を除く): 4089208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 613, 976, 1220, 1226, 2440, 2452, 3065, 4880, 4904, 6130, 9808, 12260, 24520, 37393, 49040, 74786, 149572, 186965, 299144, 373930, 598288, 747860, 1495720, 2991440]

約数ペア:

[(1, 2991440), (2, 1495720), (4, 747860), (5, 598288), (8, 373930), (10, 299144), (16, 186965), (20, 149572), (40, 74786), (61, 49040), (80, 37393), (122, 24520), (244, 12260), (305, 9808), (488, 6130), (610, 4904), (613, 4880), (976, 3065), (1220, 2452), (1226, 2440)]