161850890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{887}}^1$

素因数の和:1222

約数の個数: 32

約数和(自身を含む): 296918784

約数和(自身を除く): 135067894

約数列:

[1, 2, 5, 10, 71, 142, 257, 355, 514, 710, 887, 1285, 1774, 2570, 4435, 8870, 18247, 36494, 62977, 91235, 125954, 182470, 227959, 314885, 455918, 629770, 1139795, 2279590, 16185089, 32370178, 80925445, 161850890]

約数ペア:

[(1, 161850890), (2, 80925445), (5, 32370178), (10, 16185089), (71, 2279590), (142, 1139795), (257, 629770), (355, 455918), (514, 314885), (710, 227959), (887, 182470), (1285, 125954), (1774, 91235), (2570, 62977), (4435, 36494), (8870, 18247)]