99993560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:476

約数の個数: 64

約数和(自身を含む): 230713920

約数和(自身を除く): 130720360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 137, 142, 257, 274, 284, 355, 514, 548, 568, 685, 710, 1028, 1096, 1285, 1370, 1420, 2056, 2570, 2740, 2840, 5140, 5480, 9727, 10280, 18247, 19454, 35209, 36494, 38908, 48635, 70418, 72988, 77816, 91235, 97270, 140836, 145976, 176045, 182470, 194540, 281672, 352090, 364940, 389080, 704180, 729880, 1408360, 2499839, 4999678, 9999356, 12499195, 19998712, 24998390, 49996780, 99993560]

約数ペア:

[(1, 99993560), (2, 49996780), (4, 24998390), (5, 19998712), (8, 12499195), (10, 9999356), (20, 4999678), (40, 2499839), (71, 1408360), (137, 729880), (142, 704180), (257, 389080), (274, 364940), (284, 352090), (355, 281672), (514, 194540), (548, 182470), (568, 176045), (685, 145976), (710, 140836), (1028, 97270), (1096, 91235), (1285, 77816), (1370, 72988), (1420, 70418), (2056, 48635), (2570, 38908), (2740, 36494), (2840, 35209), (5140, 19454), (5480, 18247), (9727, 10280)]