71267240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{161971}}^1$

素因数の和:161993

約数の個数: 32

約数和(自身を含む): 174929760

約数和(自身を除く): 103662520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 161971, 323942, 647884, 809855, 1295768, 1619710, 1781681, 3239420, 3563362, 6478840, 7126724, 8908405, 14253448, 17816810, 35633620, 71267240]

約数ペア:

[(1, 71267240), (2, 35633620), (4, 17816810), (5, 14253448), (8, 8908405), (10, 7126724), (11, 6478840), (20, 3563362), (22, 3239420), (40, 1781681), (44, 1619710), (55, 1295768), (88, 809855), (110, 647884), (220, 323942), (440, 161971)]