20784735

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5309}}^1$

素因数の和:5352

約数の個数: 32

約数和(自身を含む): 38232000

約数和(自身を除く): 17447265

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5309, 15927, 26545, 47781, 79635, 143343, 153961, 238905, 461883, 716715, 769805, 1385649, 2309415, 4156947, 6928245, 20784735]

約数ペア:

[(1, 20784735), (3, 6928245), (5, 4156947), (9, 2309415), (15, 1385649), (27, 769805), (29, 716715), (45, 461883), (87, 238905), (135, 153961), (145, 143343), (261, 79635), (435, 47781), (783, 26545), (1305, 15927), (3915, 5309)]