21947458

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 36945216

約数和(自身を除く): 14997758

約数列:

[1, 2, 13, 26, 43, 67, 86, 134, 293, 559, 586, 871, 1118, 1742, 2881, 3809, 5762, 7618, 12599, 19631, 25198, 37453, 39262, 74906, 163787, 255203, 327574, 510406, 844133, 1688266, 10973729, 21947458]

約数ペア:

[(1, 21947458), (2, 10973729), (13, 1688266), (26, 844133), (43, 510406), (67, 327574), (86, 255203), (134, 163787), (293, 74906), (559, 39262), (586, 37453), (871, 25198), (1118, 19631), (1742, 12599), (2881, 7618), (3809, 5762)]