21227973

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 32073216

約数和(自身を除く): 10845243

約数列:

[1, 3, 13, 37, 39, 47, 111, 141, 313, 481, 611, 939, 1443, 1739, 1833, 4069, 5217, 11581, 12207, 14711, 22607, 34743, 44133, 67821, 150553, 191243, 451659, 544307, 573729, 1632921, 7075991, 21227973]

約数ペア:

[(1, 21227973), (3, 7075991), (13, 1632921), (37, 573729), (39, 544307), (47, 451659), (111, 191243), (141, 150553), (313, 67821), (481, 44133), (611, 34743), (939, 22607), (1443, 14711), (1739, 12207), (1833, 11581), (4069, 5217)]