19489760

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2971}}^1$

素因数の和:3027

約数の個数: 48

約数和(自身を含む): 47183472

約数和(自身を除く): 27693712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 2971, 3280, 5942, 6560, 11884, 14855, 23768, 29710, 47536, 59420, 95072, 118840, 121811, 237680, 243622, 475360, 487244, 609055, 974488, 1218110, 1948976, 2436220, 3897952, 4872440, 9744880, 19489760]

約数ペア:

[(1, 19489760), (2, 9744880), (4, 4872440), (5, 3897952), (8, 2436220), (10, 1948976), (16, 1218110), (20, 974488), (32, 609055), (40, 487244), (41, 475360), (80, 243622), (82, 237680), (160, 121811), (164, 118840), (205, 95072), (328, 59420), (410, 47536), (656, 29710), (820, 23768), (1312, 14855), (1640, 11884), (2971, 6560), (3280, 5942)]