31119760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:992

約数の個数: 80

約数和(自身を含む): 84137472

約数和(自身を除く): 53017712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 911, 976, 1220, 1708, 1822, 2135, 2440, 3416, 3644, 4270, 4555, 4880, 6377, 6832, 7288, 8540, 9110, 12754, 14576, 17080, 18220, 25508, 31885, 34160, 36440, 51016, 55571, 63770, 72880, 102032, 111142, 127540, 222284, 255080, 277855, 388997, 444568, 510160, 555710, 777994, 889136, 1111420, 1555988, 1944985, 2222840, 3111976, 3889970, 4445680, 6223952, 7779940, 15559880, 31119760]

約数ペア:

[(1, 31119760), (2, 15559880), (4, 7779940), (5, 6223952), (7, 4445680), (8, 3889970), (10, 3111976), (14, 2222840), (16, 1944985), (20, 1555988), (28, 1111420), (35, 889136), (40, 777994), (56, 555710), (61, 510160), (70, 444568), (80, 388997), (112, 277855), (122, 255080), (140, 222284), (244, 127540), (280, 111142), (305, 102032), (427, 72880), (488, 63770), (560, 55571), (610, 51016), (854, 36440), (911, 34160), (976, 31885), (1220, 25508), (1708, 18220), (1822, 17080), (2135, 14576), (2440, 12754), (3416, 9110), (3644, 8540), (4270, 7288), (4555, 6832), (4880, 6377)]