20998170

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{937}}^1$

素因数の和:1036

約数の個数: 64

約数和(自身を含む): 56730240

約数和(自身を除く): 35732070

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 83, 90, 135, 166, 249, 270, 415, 498, 747, 830, 937, 1245, 1494, 1874, 2241, 2490, 2811, 3735, 4482, 4685, 5622, 7470, 8433, 9370, 11205, 14055, 16866, 22410, 25299, 28110, 42165, 50598, 77771, 84330, 126495, 155542, 233313, 252990, 388855, 466626, 699939, 777710, 1166565, 1399878, 2099817, 2333130, 3499695, 4199634, 6999390, 10499085, 20998170]

約数ペア:

[(1, 20998170), (2, 10499085), (3, 6999390), (5, 4199634), (6, 3499695), (9, 2333130), (10, 2099817), (15, 1399878), (18, 1166565), (27, 777710), (30, 699939), (45, 466626), (54, 388855), (83, 252990), (90, 233313), (135, 155542), (166, 126495), (249, 84330), (270, 77771), (415, 50598), (498, 42165), (747, 28110), (830, 25299), (937, 22410), (1245, 16866), (1494, 14055), (1874, 11205), (2241, 9370), (2490, 8433), (2811, 7470), (3735, 5622), (4482, 4685)]