19967640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2161}}^1$

素因数の和:2193

約数の個数: 128

約数和(自身を含む): 74718720

約数和(自身を除く): 54751080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2161, 2310, 3080, 4322, 4620, 6483, 8644, 9240, 10805, 12966, 15127, 17288, 21610, 23771, 25932, 30254, 32415, 43220, 45381, 47542, 51864, 60508, 64830, 71313, 75635, 86440, 90762, 95084, 118855, 121016, 129660, 142626, 151270, 166397, 181524, 190168, 226905, 237710, 259320, 285252, 302540, 332794, 356565, 363048, 453810, 475420, 499191, 570504, 605080, 665588, 713130, 831985, 907620, 950840, 998382, 1331176, 1426260, 1663970, 1815240, 1996764, 2495955, 2852520, 3327940, 3993528, 4991910, 6655880, 9983820, 19967640]

約数ペア:

[(1, 19967640), (2, 9983820), (3, 6655880), (4, 4991910), (5, 3993528), (6, 3327940), (7, 2852520), (8, 2495955), (10, 1996764), (11, 1815240), (12, 1663970), (14, 1426260), (15, 1331176), (20, 998382), (21, 950840), (22, 907620), (24, 831985), (28, 713130), (30, 665588), (33, 605080), (35, 570504), (40, 499191), (42, 475420), (44, 453810), (55, 363048), (56, 356565), (60, 332794), (66, 302540), (70, 285252), (77, 259320), (84, 237710), (88, 226905), (105, 190168), (110, 181524), (120, 166397), (132, 151270), (140, 142626), (154, 129660), (165, 121016), (168, 118855), (210, 95084), (220, 90762), (231, 86440), (264, 75635), (280, 71313), (308, 64830), (330, 60508), (385, 51864), (420, 47542), (440, 45381), (462, 43220), (616, 32415), (660, 30254), (770, 25932), (840, 23771), (924, 21610), (1155, 17288), (1320, 15127), (1540, 12966), (1848, 10805), (2161, 9240), (2310, 8644), (3080, 6483), (4322, 4620)]