20213480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10313}}^1$

素因数の和:10338

約数の個数: 48

約数和(自身を含む): 52910820

約数和(自身を除く): 32697340

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10313, 20626, 41252, 51565, 72191, 82504, 103130, 144382, 206260, 288764, 360955, 412520, 505337, 577528, 721910, 1010674, 1443820, 2021348, 2526685, 2887640, 4042696, 5053370, 10106740, 20213480]

約数ペア:

[(1, 20213480), (2, 10106740), (4, 5053370), (5, 4042696), (7, 2887640), (8, 2526685), (10, 2021348), (14, 1443820), (20, 1010674), (28, 721910), (35, 577528), (40, 505337), (49, 412520), (56, 360955), (70, 288764), (98, 206260), (140, 144382), (196, 103130), (245, 82504), (280, 72191), (392, 51565), (490, 41252), (980, 20626), (1960, 10313)]