21158672

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{347}}^1$

素因数の和:495

約数の個数: 40

約数和(自身を含む): 42634176

約数和(自身を除く): 21475504

約数列:

[1, 2, 4, 8, 16, 37, 74, 103, 148, 206, 296, 347, 412, 592, 694, 824, 1388, 1648, 2776, 3811, 5552, 7622, 12839, 15244, 25678, 30488, 35741, 51356, 60976, 71482, 102712, 142964, 205424, 285928, 571856, 1322417, 2644834, 5289668, 10579336, 21158672]

約数ペア:

[(1, 21158672), (2, 10579336), (4, 5289668), (8, 2644834), (16, 1322417), (37, 571856), (74, 285928), (103, 205424), (148, 142964), (206, 102712), (296, 71482), (347, 60976), (412, 51356), (592, 35741), (694, 30488), (824, 25678), (1388, 15244), (1648, 12839), (2776, 7622), (3811, 5552)]