21292245

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2141}}^1$

素因数の和:2182

約数の個数: 48

約数和(自身を含む): 42103152

約数和(自身を除く): 20810907

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2141, 3315, 6423, 9945, 10705, 19269, 27833, 32115, 36397, 83499, 96345, 109191, 139165, 181985, 250497, 327573, 417495, 473161, 545955, 1252485, 1419483, 1637865, 2365805, 4258449, 7097415, 21292245]

約数ペア:

[(1, 21292245), (3, 7097415), (5, 4258449), (9, 2365805), (13, 1637865), (15, 1419483), (17, 1252485), (39, 545955), (45, 473161), (51, 417495), (65, 327573), (85, 250497), (117, 181985), (153, 139165), (195, 109191), (221, 96345), (255, 83499), (585, 36397), (663, 32115), (765, 27833), (1105, 19269), (1989, 10705), (2141, 9945), (3315, 6423)]