20894508

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 55194048

約数和(自身を除く): 34299540

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 53, 94, 106, 141, 159, 188, 212, 233, 282, 318, 423, 466, 477, 564, 636, 699, 846, 932, 954, 1398, 1692, 1908, 2097, 2491, 2796, 4194, 4982, 7473, 8388, 9964, 10951, 12349, 14946, 21902, 22419, 24698, 29892, 32853, 37047, 43804, 44838, 49396, 65706, 74094, 89676, 98559, 111141, 131412, 148188, 197118, 222282, 394236, 444564, 580403, 1160806, 1741209, 2321612, 3482418, 5223627, 6964836, 10447254, 20894508]

約数ペア:

[(1, 20894508), (2, 10447254), (3, 6964836), (4, 5223627), (6, 3482418), (9, 2321612), (12, 1741209), (18, 1160806), (36, 580403), (47, 444564), (53, 394236), (94, 222282), (106, 197118), (141, 148188), (159, 131412), (188, 111141), (212, 98559), (233, 89676), (282, 74094), (318, 65706), (423, 49396), (466, 44838), (477, 43804), (564, 37047), (636, 32853), (699, 29892), (846, 24698), (932, 22419), (954, 21902), (1398, 14946), (1692, 12349), (1908, 10951), (2097, 9964), (2491, 8388), (2796, 7473), (4194, 4982)]