19918890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5147}}^1$

素因数の和:5203

約数の個数: 48

約数和(自身を含む): 53003808

約数和(自身を除く): 33084918

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5147, 10294, 15441, 25735, 30882, 46323, 51470, 77205, 92646, 154410, 221321, 231615, 442642, 463230, 663963, 1106605, 1327926, 1991889, 2213210, 3319815, 3983778, 6639630, 9959445, 19918890]

約数ペア:

[(1, 19918890), (2, 9959445), (3, 6639630), (5, 3983778), (6, 3319815), (9, 2213210), (10, 1991889), (15, 1327926), (18, 1106605), (30, 663963), (43, 463230), (45, 442642), (86, 231615), (90, 221321), (129, 154410), (215, 92646), (258, 77205), (387, 51470), (430, 46323), (645, 30882), (774, 25735), (1290, 15441), (1935, 10294), (3870, 5147)]