19418940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11987}}^1$

素因数の和:12008

約数の個数: 60

約数和(自身を含む): 60923016

約数和(自身を除く): 41504076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 11987, 23974, 35961, 47948, 59935, 71922, 107883, 119870, 143844, 179805, 215766, 239740, 323649, 359610, 431532, 539415, 647298, 719220, 970947, 1078830, 1294596, 1618245, 1941894, 2157660, 3236490, 3883788, 4854735, 6472980, 9709470, 19418940]

約数ペア:

[(1, 19418940), (2, 9709470), (3, 6472980), (4, 4854735), (5, 3883788), (6, 3236490), (9, 2157660), (10, 1941894), (12, 1618245), (15, 1294596), (18, 1078830), (20, 970947), (27, 719220), (30, 647298), (36, 539415), (45, 431532), (54, 359610), (60, 323649), (81, 239740), (90, 215766), (108, 179805), (135, 143844), (162, 119870), (180, 107883), (270, 71922), (324, 59935), (405, 47948), (540, 35961), (810, 23974), (1620, 11987)]