19706085

素因数分解:

$3^5\times 5^1\times 7^2\times {\mathrm{331}}^1$

素因数の和:365

約数の個数: 72

約数和(自身を含む): 41330016

約数和(自身を除く): 21623931

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 243, 245, 315, 331, 405, 441, 567, 735, 945, 993, 1215, 1323, 1655, 1701, 2205, 2317, 2835, 2979, 3969, 4965, 6615, 6951, 8505, 8937, 11585, 11907, 14895, 16219, 19845, 20853, 26811, 34755, 44685, 48657, 59535, 62559, 80433, 81095, 104265, 134055, 145971, 187677, 243285, 312795, 402165, 437913, 563031, 729855, 938385, 1313739, 2189565, 2815155, 3941217, 6568695, 19706085]

約数ペア:

[(1, 19706085), (3, 6568695), (5, 3941217), (7, 2815155), (9, 2189565), (15, 1313739), (21, 938385), (27, 729855), (35, 563031), (45, 437913), (49, 402165), (63, 312795), (81, 243285), (105, 187677), (135, 145971), (147, 134055), (189, 104265), (243, 81095), (245, 80433), (315, 62559), (331, 59535), (405, 48657), (441, 44685), (567, 34755), (735, 26811), (945, 20853), (993, 19845), (1215, 16219), (1323, 14895), (1655, 11907), (1701, 11585), (2205, 8937), (2317, 8505), (2835, 6951), (2979, 6615), (3969, 4965)]