188786620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1\times {\mathrm{431}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 439193664

約数和(自身を除く): 250407044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 181, 220, 242, 362, 431, 484, 605, 724, 862, 905, 1210, 1724, 1810, 1991, 2155, 2420, 3620, 3982, 4310, 4741, 7964, 8620, 9482, 9955, 18964, 19910, 21901, 23705, 39820, 43802, 47410, 52151, 78011, 87604, 94820, 104302, 109505, 156022, 208604, 219010, 260755, 312044, 390055, 438020, 521510, 780110, 858121, 1043020, 1560220, 1716242, 3432484, 4290605, 8581210, 9439331, 17162420, 18878662, 37757324, 47196655, 94393310, 188786620]

約数ペア:

[(1, 188786620), (2, 94393310), (4, 47196655), (5, 37757324), (10, 18878662), (11, 17162420), (20, 9439331), (22, 8581210), (44, 4290605), (55, 3432484), (110, 1716242), (121, 1560220), (181, 1043020), (220, 858121), (242, 780110), (362, 521510), (431, 438020), (484, 390055), (605, 312044), (724, 260755), (862, 219010), (905, 208604), (1210, 156022), (1724, 109505), (1810, 104302), (1991, 94820), (2155, 87604), (2420, 78011), (3620, 52151), (3982, 47410), (4310, 43802), (4741, 39820), (7964, 23705), (8620, 21901), (9482, 19910), (9955, 18964)]