161006920

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 369360000

約数和(自身を除く): 208353080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 179, 199, 226, 358, 398, 452, 565, 716, 796, 895, 904, 995, 1130, 1432, 1592, 1790, 1990, 2260, 3580, 3980, 4520, 7160, 7960, 20227, 22487, 35621, 40454, 44974, 71242, 80908, 89948, 101135, 112435, 142484, 161816, 178105, 179896, 202270, 224870, 284968, 356210, 404540, 449740, 712420, 809080, 899480, 1424840, 4025173, 8050346, 16100692, 20125865, 32201384, 40251730, 80503460, 161006920]

約数ペア:

[(1, 161006920), (2, 80503460), (4, 40251730), (5, 32201384), (8, 20125865), (10, 16100692), (20, 8050346), (40, 4025173), (113, 1424840), (179, 899480), (199, 809080), (226, 712420), (358, 449740), (398, 404540), (452, 356210), (565, 284968), (716, 224870), (796, 202270), (895, 179896), (904, 178105), (995, 161816), (1130, 142484), (1432, 112435), (1592, 101135), (1790, 89948), (1990, 80908), (2260, 71242), (3580, 44974), (3980, 40454), (4520, 35621), (7160, 22487), (7960, 20227)]