21997060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{541}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 49170240

約数和(自身を除く): 27173180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 107, 190, 214, 380, 428, 535, 541, 1070, 1082, 2033, 2140, 2164, 2705, 4066, 5410, 8132, 10165, 10279, 10820, 20330, 20558, 40660, 41116, 51395, 57887, 102790, 115774, 205580, 231548, 289435, 578870, 1099853, 1157740, 2199706, 4399412, 5499265, 10998530, 21997060]

約数ペア:

[(1, 21997060), (2, 10998530), (4, 5499265), (5, 4399412), (10, 2199706), (19, 1157740), (20, 1099853), (38, 578870), (76, 289435), (95, 231548), (107, 205580), (190, 115774), (214, 102790), (380, 57887), (428, 51395), (535, 41116), (541, 40660), (1070, 20558), (1082, 20330), (2033, 10820), (2140, 10279), (2164, 10165), (2705, 8132), (4066, 5410)]