28804005

素因数分解:

$3^5\times 5^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 52450944

約数和(自身を除く): 23646939

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 151, 157, 243, 405, 453, 471, 755, 785, 1215, 1359, 1413, 2265, 2355, 4077, 4239, 6795, 7065, 12231, 12717, 20385, 21195, 23707, 36693, 38151, 61155, 63585, 71121, 118535, 183465, 190755, 213363, 355605, 640089, 1066815, 1920267, 3200445, 5760801, 9601335, 28804005]

約数ペア:

[(1, 28804005), (3, 9601335), (5, 5760801), (9, 3200445), (15, 1920267), (27, 1066815), (45, 640089), (81, 355605), (135, 213363), (151, 190755), (157, 183465), (243, 118535), (405, 71121), (453, 63585), (471, 61155), (755, 38151), (785, 36693), (1215, 23707), (1359, 21195), (1413, 20385), (2265, 12717), (2355, 12231), (4077, 7065), (4239, 6795)]