289167920

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{5639}}^1$

素因数の和:6293

約数の個数: 40

約数和(自身を含む): 673483680

約数和(自身を除く): 384315760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 2564, 3205, 5128, 5639, 6410, 10256, 11278, 12820, 22556, 25640, 28195, 45112, 51280, 56390, 90224, 112780, 225560, 451120, 3614599, 7229198, 14458396, 18072995, 28916792, 36145990, 57833584, 72291980, 144583960, 289167920]

約数ペア:

[(1, 289167920), (2, 144583960), (4, 72291980), (5, 57833584), (8, 36145990), (10, 28916792), (16, 18072995), (20, 14458396), (40, 7229198), (80, 3614599), (641, 451120), (1282, 225560), (2564, 112780), (3205, 90224), (5128, 56390), (5639, 51280), (6410, 45112), (10256, 28195), (11278, 25640), (12820, 22556)]