28379325

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{2239}}^1$

素因数の和:2278

約数の個数: 36

約数和(自身を含む): 50830080

約数和(自身を除く): 22450755

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 169, 195, 325, 507, 845, 975, 2239, 2535, 4225, 6717, 11195, 12675, 29107, 33585, 55975, 87321, 145535, 167925, 378391, 436605, 727675, 1135173, 1891955, 2183025, 5675865, 9459775, 28379325]

約数ペア:

[(1, 28379325), (3, 9459775), (5, 5675865), (13, 2183025), (15, 1891955), (25, 1135173), (39, 727675), (65, 436605), (75, 378391), (169, 167925), (195, 145535), (325, 87321), (507, 55975), (845, 33585), (975, 29107), (2239, 12675), (2535, 11195), (4225, 6717)]