28111030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 54906336

約数和(自身を除く): 26795306

約数列:

[1, 2, 5, 10, 17, 34, 71, 85, 137, 142, 170, 274, 289, 355, 578, 685, 710, 1207, 1370, 1445, 2329, 2414, 2890, 4658, 6035, 9727, 11645, 12070, 19454, 20519, 23290, 39593, 41038, 48635, 79186, 97270, 102595, 165359, 197965, 205190, 330718, 395930, 826795, 1653590, 2811103, 5622206, 14055515, 28111030]

約数ペア:

[(1, 28111030), (2, 14055515), (5, 5622206), (10, 2811103), (17, 1653590), (34, 826795), (71, 395930), (85, 330718), (137, 205190), (142, 197965), (170, 165359), (274, 102595), (289, 97270), (355, 79186), (578, 48635), (685, 41038), (710, 39593), (1207, 23290), (1370, 20519), (1445, 19454), (2329, 12070), (2414, 11645), (2890, 9727), (4658, 6035)]