20498206840

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5283043}}^1$

素因数の和:5283151

約数の個数: 32

約数和(自身を含む): 46596448080

約数和(自身を除く): 26098241240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5283043, 10566086, 21132172, 26415215, 42264344, 52830430, 105660860, 211321720, 512455171, 1024910342, 2049820684, 2562275855, 4099641368, 5124551710, 10249103420, 20498206840]

約数ペア:

[(1, 20498206840), (2, 10249103420), (4, 5124551710), (5, 4099641368), (8, 2562275855), (10, 2049820684), (20, 1024910342), (40, 512455171), (97, 211321720), (194, 105660860), (388, 52830430), (485, 42264344), (776, 26415215), (970, 21132172), (1940, 10566086), (3880, 5283043)]