161028520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{383}}^1\times {\mathrm{457}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 379883520

約数和(自身を除く): 218855000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 383, 457, 460, 766, 914, 920, 1532, 1828, 1915, 2285, 3064, 3656, 3830, 4570, 7660, 8809, 9140, 10511, 15320, 17618, 18280, 21022, 35236, 42044, 44045, 52555, 70472, 84088, 88090, 105110, 175031, 176180, 210220, 350062, 352360, 420440, 700124, 875155, 1400248, 1750310, 3500620, 4025713, 7001240, 8051426, 16102852, 20128565, 32205704, 40257130, 80514260, 161028520]

約数ペア:

[(1, 161028520), (2, 80514260), (4, 40257130), (5, 32205704), (8, 20128565), (10, 16102852), (20, 8051426), (23, 7001240), (40, 4025713), (46, 3500620), (92, 1750310), (115, 1400248), (184, 875155), (230, 700124), (383, 420440), (457, 352360), (460, 350062), (766, 210220), (914, 176180), (920, 175031), (1532, 105110), (1828, 88090), (1915, 84088), (2285, 70472), (3064, 52555), (3656, 44045), (3830, 42044), (4570, 35236), (7660, 21022), (8809, 18280), (9140, 17618), (10511, 15320)]