21261390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{887}}^1$

素因数の和:961

約数の個数: 64

約数和(自身を含む): 55240704

約数和(自身を除く): 33979314

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 47, 51, 85, 94, 102, 141, 170, 235, 255, 282, 470, 510, 705, 799, 887, 1410, 1598, 1774, 2397, 2661, 3995, 4435, 4794, 5322, 7990, 8870, 11985, 13305, 15079, 23970, 26610, 30158, 41689, 45237, 75395, 83378, 90474, 125067, 150790, 208445, 226185, 250134, 416890, 452370, 625335, 708713, 1250670, 1417426, 2126139, 3543565, 4252278, 7087130, 10630695, 21261390]

約数ペア:

[(1, 21261390), (2, 10630695), (3, 7087130), (5, 4252278), (6, 3543565), (10, 2126139), (15, 1417426), (17, 1250670), (30, 708713), (34, 625335), (47, 452370), (51, 416890), (85, 250134), (94, 226185), (102, 208445), (141, 150790), (170, 125067), (235, 90474), (255, 83378), (282, 75395), (470, 45237), (510, 41689), (705, 30158), (799, 26610), (887, 23970), (1410, 15079), (1598, 13305), (1774, 11985), (2397, 8870), (2661, 7990), (3995, 5322), (4435, 4794)]