6556720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1999}}^1$

素因数の和:2053

約数の個数: 40

約数和(自身を含む): 15624000

約数和(自身を除く): 9067280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 1999, 3280, 3998, 7996, 9995, 15992, 19990, 31984, 39980, 79960, 81959, 159920, 163918, 327836, 409795, 655672, 819590, 1311344, 1639180, 3278360, 6556720]

約数ペア:

[(1, 6556720), (2, 3278360), (4, 1639180), (5, 1311344), (8, 819590), (10, 655672), (16, 409795), (20, 327836), (40, 163918), (41, 159920), (80, 81959), (82, 79960), (164, 39980), (205, 31984), (328, 19990), (410, 15992), (656, 9995), (820, 7996), (1640, 3998), (1999, 3280)]