18773204680

素因数分解:

$2^3\times 5^1\times {\mathrm{727}}^1\times {\mathrm{645571}}^1$

素因数の和:646309

約数の個数: 32

約数和(自身を含む): 42297877440

約数和(自身を除く): 23524672760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 727, 1454, 2908, 3635, 5816, 7270, 14540, 29080, 645571, 1291142, 2582284, 3227855, 5164568, 6455710, 12911420, 25822840, 469330117, 938660234, 1877320468, 2346650585, 3754640936, 4693301170, 9386602340, 18773204680]

約数ペア:

[(1, 18773204680), (2, 9386602340), (4, 4693301170), (5, 3754640936), (8, 2346650585), (10, 1877320468), (20, 938660234), (40, 469330117), (727, 25822840), (1454, 12911420), (2908, 6455710), (3635, 5164568), (5816, 3227855), (7270, 2582284), (14540, 1291142), (29080, 645571)]