21345540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1231}}^1$

素因数の和:1277

約数の個数: 72

約数和(自身を含む): 63541632

約数和(自身を除く): 42196092

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 289, 340, 510, 578, 867, 1020, 1156, 1231, 1445, 1734, 2462, 2890, 3468, 3693, 4335, 4924, 5780, 6155, 7386, 8670, 12310, 14772, 17340, 18465, 20927, 24620, 36930, 41854, 62781, 73860, 83708, 104635, 125562, 209270, 251124, 313905, 355759, 418540, 627810, 711518, 1067277, 1255620, 1423036, 1778795, 2134554, 3557590, 4269108, 5336385, 7115180, 10672770, 21345540]

約数ペア:

[(1, 21345540), (2, 10672770), (3, 7115180), (4, 5336385), (5, 4269108), (6, 3557590), (10, 2134554), (12, 1778795), (15, 1423036), (17, 1255620), (20, 1067277), (30, 711518), (34, 627810), (51, 418540), (60, 355759), (68, 313905), (85, 251124), (102, 209270), (170, 125562), (204, 104635), (255, 83708), (289, 73860), (340, 62781), (510, 41854), (578, 36930), (867, 24620), (1020, 20927), (1156, 18465), (1231, 17340), (1445, 14772), (1734, 12310), (2462, 8670), (2890, 7386), (3468, 6155), (3693, 5780), (4335, 4924)]