18985788

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:747

約数の個数: 72

約数和(自身を含む): 51826320

約数和(自身を除く): 32840532

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 41, 57, 76, 82, 114, 123, 164, 171, 228, 246, 342, 369, 492, 677, 684, 738, 779, 1354, 1476, 1558, 2031, 2337, 2708, 3116, 4062, 4674, 6093, 7011, 8124, 9348, 12186, 12863, 14022, 24372, 25726, 27757, 28044, 38589, 51452, 55514, 77178, 83271, 111028, 115767, 154356, 166542, 231534, 249813, 333084, 463068, 499626, 527383, 999252, 1054766, 1582149, 2109532, 3164298, 4746447, 6328596, 9492894, 18985788]

約数ペア:

[(1, 18985788), (2, 9492894), (3, 6328596), (4, 4746447), (6, 3164298), (9, 2109532), (12, 1582149), (18, 1054766), (19, 999252), (36, 527383), (38, 499626), (41, 463068), (57, 333084), (76, 249813), (82, 231534), (114, 166542), (123, 154356), (164, 115767), (171, 111028), (228, 83271), (246, 77178), (342, 55514), (369, 51452), (492, 38589), (677, 28044), (684, 27757), (738, 25726), (779, 24372), (1354, 14022), (1476, 12863), (1558, 12186), (2031, 9348), (2337, 8124), (2708, 7011), (3116, 6093), (4062, 4674)]