21386910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{281}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 53602560

約数和(自身を除く): 32215650

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 59, 86, 118, 129, 177, 215, 258, 281, 295, 354, 430, 562, 590, 645, 843, 885, 1290, 1405, 1686, 1770, 2537, 2810, 4215, 5074, 7611, 8430, 12083, 12685, 15222, 16579, 24166, 25370, 33158, 36249, 38055, 49737, 60415, 72498, 76110, 82895, 99474, 120830, 165790, 181245, 248685, 362490, 497370, 712897, 1425794, 2138691, 3564485, 4277382, 7128970, 10693455, 21386910]

約数ペア:

[(1, 21386910), (2, 10693455), (3, 7128970), (5, 4277382), (6, 3564485), (10, 2138691), (15, 1425794), (30, 712897), (43, 497370), (59, 362490), (86, 248685), (118, 181245), (129, 165790), (177, 120830), (215, 99474), (258, 82895), (281, 76110), (295, 72498), (354, 60415), (430, 49737), (562, 38055), (590, 36249), (645, 33158), (843, 25370), (885, 24166), (1290, 16579), (1405, 15222), (1686, 12685), (1770, 12083), (2537, 8430), (2810, 7611), (4215, 5074)]