21713175

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:341

約数の個数: 72

約数和(自身を含む): 43949568

約数和(自身を除く): 22236393

約数列:

[1, 3, 5, 9, 11, 15, 25, 31, 33, 45, 55, 75, 93, 99, 155, 165, 225, 275, 279, 283, 341, 465, 495, 775, 825, 849, 1023, 1395, 1415, 1705, 2325, 2475, 2547, 3069, 3113, 4245, 5115, 6975, 7075, 8525, 8773, 9339, 12735, 15345, 15565, 21225, 25575, 26319, 28017, 43865, 46695, 63675, 76725, 77825, 78957, 96503, 131595, 140085, 219325, 233475, 289509, 394785, 482515, 657975, 700425, 868527, 1447545, 1973925, 2412575, 4342635, 7237725, 21713175]

約数ペア:

[(1, 21713175), (3, 7237725), (5, 4342635), (9, 2412575), (11, 1973925), (15, 1447545), (25, 868527), (31, 700425), (33, 657975), (45, 482515), (55, 394785), (75, 289509), (93, 233475), (99, 219325), (155, 140085), (165, 131595), (225, 96503), (275, 78957), (279, 77825), (283, 76725), (341, 63675), (465, 46695), (495, 43865), (775, 28017), (825, 26319), (849, 25575), (1023, 21225), (1395, 15565), (1415, 15345), (1705, 12735), (2325, 9339), (2475, 8773), (2547, 8525), (3069, 7075), (3113, 6975), (4245, 5115)]