21604396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 43610112

約数和(自身を除く): 22005716

約数列:

[1, 2, 4, 11, 22, 31, 44, 47, 62, 94, 124, 188, 337, 341, 517, 674, 682, 1034, 1348, 1364, 1457, 2068, 2914, 3707, 5828, 7414, 10447, 14828, 15839, 16027, 20894, 31678, 32054, 41788, 63356, 64108, 114917, 174229, 229834, 348458, 459668, 491009, 696916, 982018, 1964036, 5401099, 10802198, 21604396]

約数ペア:

[(1, 21604396), (2, 10802198), (4, 5401099), (11, 1964036), (22, 982018), (31, 696916), (44, 491009), (47, 459668), (62, 348458), (94, 229834), (124, 174229), (188, 114917), (337, 64108), (341, 63356), (517, 41788), (674, 32054), (682, 31678), (1034, 20894), (1348, 16027), (1364, 15839), (1457, 14828), (2068, 10447), (2914, 7414), (3707, 5828)]