161749220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{1693}}^1$

素因数の和:2000

約数の個数: 48

約数和(自身を含む): 361147248

約数和(自身を除く): 199398028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 281, 340, 562, 1124, 1405, 1693, 2810, 3386, 4777, 5620, 6772, 8465, 9554, 16930, 19108, 23885, 28781, 33860, 47770, 57562, 95540, 115124, 143905, 287810, 475733, 575620, 951466, 1902932, 2378665, 4757330, 8087461, 9514660, 16174922, 32349844, 40437305, 80874610, 161749220]

約数ペア:

[(1, 161749220), (2, 80874610), (4, 40437305), (5, 32349844), (10, 16174922), (17, 9514660), (20, 8087461), (34, 4757330), (68, 2378665), (85, 1902932), (170, 951466), (281, 575620), (340, 475733), (562, 287810), (1124, 143905), (1405, 115124), (1693, 95540), (2810, 57562), (3386, 47770), (4777, 33860), (5620, 28781), (6772, 23885), (8465, 19108), (9554, 16930)]