21484060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4349}}^1$

素因数の和:4390

約数の個数: 48

約数和(自身を含む): 51156000

約数和(自身を除く): 29671940

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4349, 4940, 8698, 17396, 21745, 43490, 56537, 82631, 86980, 113074, 165262, 226148, 282685, 330524, 413155, 565370, 826310, 1074203, 1130740, 1652620, 2148406, 4296812, 5371015, 10742030, 21484060]

約数ペア:

[(1, 21484060), (2, 10742030), (4, 5371015), (5, 4296812), (10, 2148406), (13, 1652620), (19, 1130740), (20, 1074203), (26, 826310), (38, 565370), (52, 413155), (65, 330524), (76, 282685), (95, 226148), (130, 165262), (190, 113074), (247, 86980), (260, 82631), (380, 56537), (494, 43490), (988, 21745), (1235, 17396), (2470, 8698), (4349, 4940)]