20129408715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1\times {\mathrm{659}}^1$

素因数の和:905

約数の個数: 96

約数和(自身を含む): 36114059520

約数和(自身を除く): 15984650805

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 163, 195, 403, 465, 489, 659, 815, 961, 1209, 1977, 2015, 2119, 2445, 2883, 3295, 4805, 5053, 6045, 6357, 8567, 9885, 10595, 12493, 14415, 15159, 20429, 25265, 25701, 31785, 37479, 42835, 61287, 62465, 65689, 75795, 102145, 107417, 128505, 156643, 187395, 197067, 265577, 306435, 322251, 328445, 469929, 537085, 633299, 783215, 796731, 985335, 1327885, 1396421, 1611255, 1899897, 2036359, 2349645, 3166495, 3329927, 3983655, 4189263, 6109077, 6982105, 8232887, 9499485, 9989781, 10181795, 16649635, 20946315, 24698661, 30545385, 41164435, 43289051, 49948905, 103227737, 123493305, 129867153, 216445255, 309683211, 516138685, 649335765, 1341960581, 1548416055, 4025881743, 6709802905, 20129408715]

約数ペア:

[(1, 20129408715), (3, 6709802905), (5, 4025881743), (13, 1548416055), (15, 1341960581), (31, 649335765), (39, 516138685), (65, 309683211), (93, 216445255), (155, 129867153), (163, 123493305), (195, 103227737), (403, 49948905), (465, 43289051), (489, 41164435), (659, 30545385), (815, 24698661), (961, 20946315), (1209, 16649635), (1977, 10181795), (2015, 9989781), (2119, 9499485), (2445, 8232887), (2883, 6982105), (3295, 6109077), (4805, 4189263), (5053, 3983655), (6045, 3329927), (6357, 3166495), (8567, 2349645), (9885, 2036359), (10595, 1899897), (12493, 1611255), (14415, 1396421), (15159, 1327885), (20429, 985335), (25265, 796731), (25701, 783215), (31785, 633299), (37479, 537085), (42835, 469929), (61287, 328445), (62465, 322251), (65689, 306435), (75795, 265577), (102145, 197067), (107417, 187395), (128505, 156643)]