7871440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1613}}^1$

素因数の和:1687

約数の個数: 40

約数和(自身を含む): 18612648

約数和(自身を除く): 10741208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 1613, 2440, 3226, 4880, 6452, 8065, 12904, 16130, 25808, 32260, 64520, 98393, 129040, 196786, 393572, 491965, 787144, 983930, 1574288, 1967860, 3935720, 7871440]

約数ペア:

[(1, 7871440), (2, 3935720), (4, 1967860), (5, 1574288), (8, 983930), (10, 787144), (16, 491965), (20, 393572), (40, 196786), (61, 129040), (80, 98393), (122, 64520), (244, 32260), (305, 25808), (488, 16130), (610, 12904), (976, 8065), (1220, 6452), (1613, 4880), (2440, 3226)]