1388456426

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1\times {\mathrm{263}}^1$

素因数の和:603

約数の個数: 64

約数和(自身を含む): 2554675200

約数和(自身を除く): 1166218774

約数列:

[1, 2, 7, 14, 19, 38, 89, 133, 178, 223, 263, 266, 446, 526, 623, 1246, 1561, 1691, 1841, 3122, 3382, 3682, 4237, 4997, 8474, 9994, 11837, 19847, 23407, 23674, 29659, 34979, 39694, 46814, 58649, 59318, 69958, 117298, 138929, 163849, 277858, 327698, 377093, 410543, 444733, 754186, 821086, 889466, 1114331, 2228662, 2639651, 3113131, 5219761, 5279302, 6226262, 7800317, 10439522, 15600634, 36538327, 73076654, 99175459, 198350918, 694228213, 1388456426]

約数ペア:

[(1, 1388456426), (2, 694228213), (7, 198350918), (14, 99175459), (19, 73076654), (38, 36538327), (89, 15600634), (133, 10439522), (178, 7800317), (223, 6226262), (263, 5279302), (266, 5219761), (446, 3113131), (526, 2639651), (623, 2228662), (1246, 1114331), (1561, 889466), (1691, 821086), (1841, 754186), (3122, 444733), (3382, 410543), (3682, 377093), (4237, 327698), (4997, 277858), (8474, 163849), (9994, 138929), (11837, 117298), (19847, 69958), (23407, 59318), (23674, 58649), (29659, 46814), (34979, 39694)]