21819075

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 38792160

約数和(自身を除く): 16973085

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 109, 157, 255, 327, 425, 471, 545, 785, 1275, 1635, 1853, 2355, 2669, 2725, 3925, 5559, 8007, 8175, 9265, 11775, 13345, 17113, 27795, 40035, 46325, 51339, 66725, 85565, 138975, 200175, 256695, 290921, 427825, 872763, 1283475, 1454605, 4363815, 7273025, 21819075]

約数ペア:

[(1, 21819075), (3, 7273025), (5, 4363815), (15, 1454605), (17, 1283475), (25, 872763), (51, 427825), (75, 290921), (85, 256695), (109, 200175), (157, 138975), (255, 85565), (327, 66725), (425, 51339), (471, 46325), (545, 40035), (785, 27795), (1275, 17113), (1635, 13345), (1853, 11775), (2355, 9265), (2669, 8175), (2725, 8007), (3925, 5559)]