21404988

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{283}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 59544576

約数和(自身を除く): 38139588

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 191, 198, 283, 382, 396, 566, 573, 764, 849, 1132, 1146, 1698, 1719, 2101, 2292, 2547, 3113, 3396, 3438, 4202, 5094, 6226, 6303, 6876, 8404, 9339, 10188, 12452, 12606, 18678, 18909, 25212, 28017, 37356, 37818, 54053, 56034, 75636, 108106, 112068, 162159, 216212, 324318, 486477, 594583, 648636, 972954, 1189166, 1783749, 1945908, 2378332, 3567498, 5351247, 7134996, 10702494, 21404988]

約数ペア:

[(1, 21404988), (2, 10702494), (3, 7134996), (4, 5351247), (6, 3567498), (9, 2378332), (11, 1945908), (12, 1783749), (18, 1189166), (22, 972954), (33, 648636), (36, 594583), (44, 486477), (66, 324318), (99, 216212), (132, 162159), (191, 112068), (198, 108106), (283, 75636), (382, 56034), (396, 54053), (566, 37818), (573, 37356), (764, 28017), (849, 25212), (1132, 18909), (1146, 18678), (1698, 12606), (1719, 12452), (2101, 10188), (2292, 9339), (2547, 8404), (3113, 6876), (3396, 6303), (3438, 6226), (4202, 5094)]