28870985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{271}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 41126400

約数和(自身を除く): 12255415

約数列:

[1, 5, 11, 13, 55, 65, 143, 149, 271, 715, 745, 1355, 1639, 1937, 2981, 3523, 8195, 9685, 14905, 17615, 21307, 38753, 40379, 106535, 193765, 201895, 444169, 524927, 2220845, 2624635, 5774197, 28870985]

約数ペア:

[(1, 28870985), (5, 5774197), (11, 2624635), (13, 2220845), (55, 524927), (65, 444169), (143, 201895), (149, 193765), (271, 106535), (715, 40379), (745, 38753), (1355, 21307), (1639, 17615), (1937, 14905), (2981, 9685), (3523, 8195)]