31696720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:404

約数の個数: 80

約数和(自身を含む): 81244800

約数和(自身を除く): 49548080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 181, 199, 220, 362, 398, 440, 724, 796, 880, 905, 995, 1448, 1592, 1810, 1990, 1991, 2189, 2896, 3184, 3620, 3980, 3982, 4378, 7240, 7960, 7964, 8756, 9955, 10945, 14480, 15920, 15928, 17512, 19910, 21890, 31856, 35024, 36019, 39820, 43780, 72038, 79640, 87560, 144076, 159280, 175120, 180095, 288152, 360190, 396209, 576304, 720380, 792418, 1440760, 1584836, 1981045, 2881520, 3169672, 3962090, 6339344, 7924180, 15848360, 31696720]

約数ペア:

[(1, 31696720), (2, 15848360), (4, 7924180), (5, 6339344), (8, 3962090), (10, 3169672), (11, 2881520), (16, 1981045), (20, 1584836), (22, 1440760), (40, 792418), (44, 720380), (55, 576304), (80, 396209), (88, 360190), (110, 288152), (176, 180095), (181, 175120), (199, 159280), (220, 144076), (362, 87560), (398, 79640), (440, 72038), (724, 43780), (796, 39820), (880, 36019), (905, 35024), (995, 31856), (1448, 21890), (1592, 19910), (1810, 17512), (1990, 15928), (1991, 15920), (2189, 14480), (2896, 10945), (3184, 9955), (3620, 8756), (3980, 7964), (3982, 7960), (4378, 7240)]