28507145

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^2\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 36563400

約数和(自身を除く): 8056255

約数列:

[1, 5, 29, 47, 89, 145, 235, 445, 1363, 2209, 2581, 4183, 6815, 11045, 12905, 20915, 64061, 121307, 196601, 320305, 606535, 983005, 5701429, 28507145]

約数ペア:

[(1, 28507145), (5, 5701429), (29, 983005), (47, 606535), (89, 320305), (145, 196601), (235, 121307), (445, 64061), (1363, 20915), (2209, 12905), (2581, 11045), (4183, 6815)]