21514460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5147}}^1$

素因数の和:5186

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 30377380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 5147, 10294, 20588, 25735, 51470, 56617, 97793, 102940, 113234, 195586, 226468, 283085, 391172, 488965, 566170, 977930, 1075723, 1132340, 1955860, 2151446, 4302892, 5378615, 10757230, 21514460]

約数ペア:

[(1, 21514460), (2, 10757230), (4, 5378615), (5, 4302892), (10, 2151446), (11, 1955860), (19, 1132340), (20, 1075723), (22, 977930), (38, 566170), (44, 488965), (55, 391172), (76, 283085), (95, 226468), (110, 195586), (190, 113234), (209, 102940), (220, 97793), (380, 56617), (418, 51470), (836, 25735), (1045, 20588), (2090, 10294), (4180, 5147)]