20688525

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:683

約数の個数: 72

約数和(自身を含む): 43601376

約数和(自身を除く): 22912851

約数列:

[1, 3, 5, 9, 11, 13, 15, 25, 33, 39, 45, 55, 65, 75, 99, 117, 143, 165, 195, 225, 275, 325, 429, 495, 585, 643, 715, 825, 975, 1287, 1929, 2145, 2475, 2925, 3215, 3575, 5787, 6435, 7073, 8359, 9645, 10725, 16075, 21219, 25077, 28935, 32175, 35365, 41795, 48225, 63657, 75231, 91949, 106095, 125385, 144675, 176825, 208975, 275847, 318285, 376155, 459745, 530475, 626925, 827541, 1379235, 1591425, 1880775, 2298725, 4137705, 6896175, 20688525]

約数ペア:

[(1, 20688525), (3, 6896175), (5, 4137705), (9, 2298725), (11, 1880775), (13, 1591425), (15, 1379235), (25, 827541), (33, 626925), (39, 530475), (45, 459745), (55, 376155), (65, 318285), (75, 275847), (99, 208975), (117, 176825), (143, 144675), (165, 125385), (195, 106095), (225, 91949), (275, 75231), (325, 63657), (429, 48225), (495, 41795), (585, 35365), (643, 32175), (715, 28935), (825, 25077), (975, 21219), (1287, 16075), (1929, 10725), (2145, 9645), (2475, 8359), (2925, 7073), (3215, 6435), (3575, 5787)]