491528620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{2011}}^1$

素因数の和:2143

約数の個数: 72

約数和(自身を含む): 1146381264

約数和(自身を除く): 654852644

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 121, 202, 220, 242, 404, 484, 505, 605, 1010, 1111, 1210, 2011, 2020, 2222, 2420, 4022, 4444, 5555, 8044, 10055, 11110, 12221, 20110, 22121, 22220, 24442, 40220, 44242, 48884, 61105, 88484, 110605, 122210, 203111, 221210, 243331, 244420, 406222, 442420, 486662, 812444, 973324, 1015555, 1216655, 2031110, 2234221, 2433310, 4062220, 4468442, 4866620, 8936884, 11171105, 22342210, 24576431, 44684420, 49152862, 98305724, 122882155, 245764310, 491528620]

約数ペア:

[(1, 491528620), (2, 245764310), (4, 122882155), (5, 98305724), (10, 49152862), (11, 44684420), (20, 24576431), (22, 22342210), (44, 11171105), (55, 8936884), (101, 4866620), (110, 4468442), (121, 4062220), (202, 2433310), (220, 2234221), (242, 2031110), (404, 1216655), (484, 1015555), (505, 973324), (605, 812444), (1010, 486662), (1111, 442420), (1210, 406222), (2011, 244420), (2020, 243331), (2222, 221210), (2420, 203111), (4022, 122210), (4444, 110605), (5555, 88484), (8044, 61105), (10055, 48884), (11110, 44242), (12221, 40220), (20110, 24442), (22121, 22220)]