80317900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1993}}^1$

素因数の和:2051

約数の個数: 72

約数和(自身を含む): 193848704

約数和(自身を除く): 113530804

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 260, 310, 325, 403, 620, 650, 775, 806, 1300, 1550, 1612, 1993, 2015, 3100, 3986, 4030, 7972, 8060, 9965, 10075, 19930, 20150, 25909, 39860, 40300, 49825, 51818, 61783, 99650, 103636, 123566, 129545, 199300, 247132, 259090, 308915, 518180, 617830, 647725, 803179, 1235660, 1295450, 1544575, 1606358, 2590900, 3089150, 3212716, 4015895, 6178300, 8031790, 16063580, 20079475, 40158950, 80317900]

約数ペア:

[(1, 80317900), (2, 40158950), (4, 20079475), (5, 16063580), (10, 8031790), (13, 6178300), (20, 4015895), (25, 3212716), (26, 3089150), (31, 2590900), (50, 1606358), (52, 1544575), (62, 1295450), (65, 1235660), (100, 803179), (124, 647725), (130, 617830), (155, 518180), (260, 308915), (310, 259090), (325, 247132), (403, 199300), (620, 129545), (650, 123566), (775, 103636), (806, 99650), (1300, 61783), (1550, 51818), (1612, 49825), (1993, 40300), (2015, 39860), (3100, 25909), (3986, 20150), (4030, 19930), (7972, 10075), (8060, 9965)]