28725515

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 16090165

約数列:

[1, 5, 7, 13, 29, 35, 49, 65, 91, 145, 203, 245, 311, 377, 455, 637, 1015, 1421, 1555, 1885, 2177, 2639, 3185, 4043, 7105, 9019, 10885, 13195, 15239, 18473, 20215, 28301, 45095, 63133, 76195, 92365, 117247, 141505, 198107, 315665, 441931, 586235, 820729, 990535, 2209655, 4103645, 5745103, 28725515]

約数ペア:

[(1, 28725515), (5, 5745103), (7, 4103645), (13, 2209655), (29, 990535), (35, 820729), (49, 586235), (65, 441931), (91, 315665), (145, 198107), (203, 141505), (245, 117247), (311, 92365), (377, 76195), (455, 63133), (637, 45095), (1015, 28301), (1421, 20215), (1555, 18473), (1885, 15239), (2177, 13195), (2639, 10885), (3185, 9019), (4043, 7105)]