21355608

素因数分解:

$2^3\times 3^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 55261440

約数和(自身を除く): 33905832

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 53, 103, 106, 159, 163, 206, 212, 309, 318, 326, 412, 424, 489, 618, 636, 652, 824, 978, 1236, 1272, 1304, 1956, 2472, 3912, 5459, 8639, 10918, 16377, 16789, 17278, 21836, 25917, 32754, 33578, 34556, 43672, 50367, 51834, 65508, 67156, 69112, 100734, 103668, 131016, 134312, 201468, 207336, 402936, 889817, 1779634, 2669451, 3559268, 5338902, 7118536, 10677804, 21355608]

約数ペア:

[(1, 21355608), (2, 10677804), (3, 7118536), (4, 5338902), (6, 3559268), (8, 2669451), (12, 1779634), (24, 889817), (53, 402936), (103, 207336), (106, 201468), (159, 134312), (163, 131016), (206, 103668), (212, 100734), (309, 69112), (318, 67156), (326, 65508), (412, 51834), (424, 50367), (489, 43672), (618, 34556), (636, 33578), (652, 32754), (824, 25917), (978, 21836), (1236, 17278), (1272, 16789), (1304, 16377), (1956, 10918), (2472, 8639), (3912, 5459)]