21081260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1913}}^1$

素因数の和:1970

約数の個数: 48

約数和(自身を含む): 48232800

約数和(自身を除く): 27151540

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 1913, 2204, 2755, 3826, 5510, 7652, 9565, 11020, 19130, 36347, 38260, 55477, 72694, 110954, 145388, 181735, 221908, 277385, 363470, 554770, 726940, 1054063, 1109540, 2108126, 4216252, 5270315, 10540630, 21081260]

約数ペア:

[(1, 21081260), (2, 10540630), (4, 5270315), (5, 4216252), (10, 2108126), (19, 1109540), (20, 1054063), (29, 726940), (38, 554770), (58, 363470), (76, 277385), (95, 221908), (116, 181735), (145, 145388), (190, 110954), (290, 72694), (380, 55477), (551, 38260), (580, 36347), (1102, 19130), (1913, 11020), (2204, 9565), (2755, 7652), (3826, 5510)]