21225930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 56111616

約数和(自身を除く): 34885686

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 131, 165, 262, 330, 393, 491, 655, 786, 982, 1310, 1441, 1473, 1965, 2455, 2882, 2946, 3930, 4323, 4910, 5401, 7205, 7365, 8646, 10802, 14410, 14730, 16203, 21615, 27005, 32406, 43230, 54010, 64321, 81015, 128642, 162030, 192963, 321605, 385926, 643210, 707531, 964815, 1415062, 1929630, 2122593, 3537655, 4245186, 7075310, 10612965, 21225930]

約数ペア:

[(1, 21225930), (2, 10612965), (3, 7075310), (5, 4245186), (6, 3537655), (10, 2122593), (11, 1929630), (15, 1415062), (22, 964815), (30, 707531), (33, 643210), (55, 385926), (66, 321605), (110, 192963), (131, 162030), (165, 128642), (262, 81015), (330, 64321), (393, 54010), (491, 43230), (655, 32406), (786, 27005), (982, 21615), (1310, 16203), (1441, 14730), (1473, 14410), (1965, 10802), (2455, 8646), (2882, 7365), (2946, 7205), (3930, 5401), (4323, 4910)]