161604080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:882

約数の個数: 80

約数和(自身を含む): 411804000

約数和(自身を除く): 250199920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 409, 440, 449, 818, 880, 898, 1636, 1796, 2045, 2245, 3272, 3592, 4090, 4490, 4499, 4939, 6544, 7184, 8180, 8980, 8998, 9878, 16360, 17960, 17996, 19756, 22495, 24695, 32720, 35920, 35992, 39512, 44990, 49390, 71984, 79024, 89980, 98780, 179960, 183641, 197560, 359920, 367282, 395120, 734564, 918205, 1469128, 1836410, 2020051, 2938256, 3672820, 4040102, 7345640, 8080204, 10100255, 14691280, 16160408, 20200510, 32320816, 40401020, 80802040, 161604080]

約数ペア:

[(1, 161604080), (2, 80802040), (4, 40401020), (5, 32320816), (8, 20200510), (10, 16160408), (11, 14691280), (16, 10100255), (20, 8080204), (22, 7345640), (40, 4040102), (44, 3672820), (55, 2938256), (80, 2020051), (88, 1836410), (110, 1469128), (176, 918205), (220, 734564), (409, 395120), (440, 367282), (449, 359920), (818, 197560), (880, 183641), (898, 179960), (1636, 98780), (1796, 89980), (2045, 79024), (2245, 71984), (3272, 49390), (3592, 44990), (4090, 39512), (4490, 35992), (4499, 35920), (4939, 32720), (6544, 24695), (7184, 22495), (8180, 19756), (8980, 17996), (8998, 17960), (9878, 16360)]