20503660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{683}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 25461140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 380, 395, 683, 790, 1366, 1501, 1580, 2732, 3002, 3415, 6004, 6830, 7505, 12977, 13660, 15010, 25954, 30020, 51908, 53957, 64885, 107914, 129770, 215828, 259540, 269785, 539570, 1025183, 1079140, 2050366, 4100732, 5125915, 10251830, 20503660]

約数ペア:

[(1, 20503660), (2, 10251830), (4, 5125915), (5, 4100732), (10, 2050366), (19, 1079140), (20, 1025183), (38, 539570), (76, 269785), (79, 259540), (95, 215828), (158, 129770), (190, 107914), (316, 64885), (380, 53957), (395, 51908), (683, 30020), (790, 25954), (1366, 15010), (1501, 13660), (1580, 12977), (2732, 7505), (3002, 6830), (3415, 6004)]