18979020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1087}}^1$

素因数の和:1199

約数の個数: 72

約数和(自身を含む): 58216704

約数和(自身を除く): 39237684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1087, 1164, 1455, 1746, 1940, 2174, 2910, 3261, 3492, 4348, 4365, 5435, 5820, 6522, 8730, 9783, 10870, 13044, 16305, 17460, 19566, 21740, 32610, 39132, 48915, 65220, 97830, 105439, 195660, 210878, 316317, 421756, 527195, 632634, 948951, 1054390, 1265268, 1581585, 1897902, 2108780, 3163170, 3795804, 4744755, 6326340, 9489510, 18979020]

約数ペア:

[(1, 18979020), (2, 9489510), (3, 6326340), (4, 4744755), (5, 3795804), (6, 3163170), (9, 2108780), (10, 1897902), (12, 1581585), (15, 1265268), (18, 1054390), (20, 948951), (30, 632634), (36, 527195), (45, 421756), (60, 316317), (90, 210878), (97, 195660), (180, 105439), (194, 97830), (291, 65220), (388, 48915), (485, 39132), (582, 32610), (873, 21740), (970, 19566), (1087, 17460), (1164, 16305), (1455, 13044), (1746, 10870), (1940, 9783), (2174, 8730), (2910, 6522), (3261, 5820), (3492, 5435), (4348, 4365)]