28908425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 44913792

約数和(自身を除く): 16005367

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 97, 131, 175, 325, 455, 485, 655, 679, 917, 1261, 1703, 2275, 2425, 3275, 3395, 4585, 6305, 8515, 8827, 11921, 12707, 16975, 22925, 31525, 42575, 44135, 59605, 63535, 88949, 165191, 220675, 298025, 317675, 444745, 825955, 1156337, 2223725, 4129775, 5781685, 28908425]

約数ペア:

[(1, 28908425), (5, 5781685), (7, 4129775), (13, 2223725), (25, 1156337), (35, 825955), (65, 444745), (91, 317675), (97, 298025), (131, 220675), (175, 165191), (325, 88949), (455, 63535), (485, 59605), (655, 44135), (679, 42575), (917, 31525), (1261, 22925), (1703, 16975), (2275, 12707), (2425, 11921), (3275, 8827), (3395, 8515), (4585, 6305)]