31816120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{571}}^1$

素因数の和:788

約数の個数: 64

約数和(自身を含む): 82368000

約数和(自身を除く): 50551880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 571, 796, 995, 1142, 1393, 1592, 1990, 2284, 2786, 2855, 3980, 3997, 4568, 5572, 5710, 6965, 7960, 7994, 11144, 11420, 13930, 15988, 19985, 22840, 27860, 31976, 39970, 55720, 79940, 113629, 159880, 227258, 454516, 568145, 795403, 909032, 1136290, 1590806, 2272580, 3181612, 3977015, 4545160, 6363224, 7954030, 15908060, 31816120]

約数ペア:

[(1, 31816120), (2, 15908060), (4, 7954030), (5, 6363224), (7, 4545160), (8, 3977015), (10, 3181612), (14, 2272580), (20, 1590806), (28, 1136290), (35, 909032), (40, 795403), (56, 568145), (70, 454516), (140, 227258), (199, 159880), (280, 113629), (398, 79940), (571, 55720), (796, 39970), (995, 31976), (1142, 27860), (1393, 22840), (1592, 19985), (1990, 15988), (2284, 13930), (2786, 11420), (2855, 11144), (3980, 7994), (3997, 7960), (4568, 6965), (5572, 5710)]