20659012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 21797948

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 71, 142, 187, 284, 374, 389, 748, 778, 781, 1207, 1556, 1562, 2414, 3124, 4279, 4828, 6613, 8558, 13226, 13277, 17116, 26452, 26554, 27619, 53108, 55238, 72743, 110476, 145486, 290972, 303809, 469523, 607618, 939046, 1215236, 1878092, 5164753, 10329506, 20659012]

約数ペア:

[(1, 20659012), (2, 10329506), (4, 5164753), (11, 1878092), (17, 1215236), (22, 939046), (34, 607618), (44, 469523), (68, 303809), (71, 290972), (142, 145486), (187, 110476), (284, 72743), (374, 55238), (389, 53108), (748, 27619), (778, 26554), (781, 26452), (1207, 17116), (1556, 13277), (1562, 13226), (2414, 8558), (3124, 6613), (4279, 4828)]