18514780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{337}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 40543776

約数和(自身を除く): 22028996

約数列:

[1, 2, 4, 5, 10, 20, 41, 67, 82, 134, 164, 205, 268, 335, 337, 410, 670, 674, 820, 1340, 1348, 1685, 2747, 3370, 5494, 6740, 10988, 13735, 13817, 22579, 27470, 27634, 45158, 54940, 55268, 69085, 90316, 112895, 138170, 225790, 276340, 451580, 925739, 1851478, 3702956, 4628695, 9257390, 18514780]

約数ペア:

[(1, 18514780), (2, 9257390), (4, 4628695), (5, 3702956), (10, 1851478), (20, 925739), (41, 451580), (67, 276340), (82, 225790), (134, 138170), (164, 112895), (205, 90316), (268, 69085), (335, 55268), (337, 54940), (410, 45158), (670, 27634), (674, 27470), (820, 22579), (1340, 13817), (1348, 13735), (1685, 10988), (2747, 6740), (3370, 5494)]