21617325

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3313}}^1$

素因数の和:3358

約数の個数: 36

約数和(自身を含む): 40066260

約数和(自身を除く): 18448935

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3313, 6525, 9939, 16565, 29817, 49695, 82825, 96077, 149085, 248475, 288231, 480385, 745425, 864693, 1441155, 2401925, 4323465, 7205775, 21617325]

約数ペア:

[(1, 21617325), (3, 7205775), (5, 4323465), (9, 2401925), (15, 1441155), (25, 864693), (29, 745425), (45, 480385), (75, 288231), (87, 248475), (145, 149085), (225, 96077), (261, 82825), (435, 49695), (725, 29817), (1305, 16565), (2175, 9939), (3313, 6525)]