181997120

素因数分解:

$2^6\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2213}}^1$

素因数の和:2487

約数の個数: 56

約数和(自身を含む): 435263544

約数和(自身を除く): 253266424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 257, 320, 514, 1028, 1285, 2056, 2213, 2570, 4112, 4426, 5140, 8224, 8852, 10280, 11065, 16448, 17704, 20560, 22130, 35408, 41120, 44260, 70816, 82240, 88520, 141632, 177040, 354080, 568741, 708160, 1137482, 2274964, 2843705, 4549928, 5687410, 9099856, 11374820, 18199712, 22749640, 36399424, 45499280, 90998560, 181997120]

約数ペア:

[(1, 181997120), (2, 90998560), (4, 45499280), (5, 36399424), (8, 22749640), (10, 18199712), (16, 11374820), (20, 9099856), (32, 5687410), (40, 4549928), (64, 2843705), (80, 2274964), (160, 1137482), (257, 708160), (320, 568741), (514, 354080), (1028, 177040), (1285, 141632), (2056, 88520), (2213, 82240), (2570, 70816), (4112, 44260), (4426, 41120), (5140, 35408), (8224, 22130), (8852, 20560), (10280, 17704), (11065, 16448)]