81199280

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{5867}}^1$

素因数の和:6053

約数の個数: 40

約数和(自身を含む): 189911952

約数和(自身を除く): 108712672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1384, 1730, 2768, 3460, 5867, 6920, 11734, 13840, 23468, 29335, 46936, 58670, 93872, 117340, 234680, 469360, 1014991, 2029982, 4059964, 5074955, 8119928, 10149910, 16239856, 20299820, 40599640, 81199280]

約数ペア:

[(1, 81199280), (2, 40599640), (4, 20299820), (5, 16239856), (8, 10149910), (10, 8119928), (16, 5074955), (20, 4059964), (40, 2029982), (80, 1014991), (173, 469360), (346, 234680), (692, 117340), (865, 93872), (1384, 58670), (1730, 46936), (2768, 29335), (3460, 23468), (5867, 13840), (6920, 11734)]