19815660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{389}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 60474960

約数和(自身を除く): 40659300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 283, 389, 566, 778, 849, 1132, 1167, 1415, 1556, 1698, 1945, 2334, 2547, 2830, 3396, 3501, 3890, 4245, 4668, 5094, 5660, 5835, 7002, 7780, 8490, 10188, 11670, 12735, 14004, 16980, 17505, 23340, 25470, 35010, 50940, 70020, 110087, 220174, 330261, 440348, 550435, 660522, 990783, 1100870, 1321044, 1651305, 1981566, 2201740, 3302610, 3963132, 4953915, 6605220, 9907830, 19815660]

約数ペア:

[(1, 19815660), (2, 9907830), (3, 6605220), (4, 4953915), (5, 3963132), (6, 3302610), (9, 2201740), (10, 1981566), (12, 1651305), (15, 1321044), (18, 1100870), (20, 990783), (30, 660522), (36, 550435), (45, 440348), (60, 330261), (90, 220174), (180, 110087), (283, 70020), (389, 50940), (566, 35010), (778, 25470), (849, 23340), (1132, 17505), (1167, 16980), (1415, 14004), (1556, 12735), (1698, 11670), (1945, 10188), (2334, 8490), (2547, 7780), (2830, 7002), (3396, 5835), (3501, 5660), (3890, 5094), (4245, 4668)]