25121005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 38790144

約数和(自身を除く): 13669139

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 137, 155, 169, 217, 403, 455, 685, 845, 959, 1085, 1183, 1781, 2015, 2821, 4247, 4795, 5239, 5915, 8905, 12467, 14105, 21235, 23153, 26195, 29729, 36673, 55211, 62335, 115765, 148645, 162071, 183365, 276055, 386477, 717743, 810355, 1932385, 3588715, 5024201, 25121005]

約数ペア:

[(1, 25121005), (5, 5024201), (7, 3588715), (13, 1932385), (31, 810355), (35, 717743), (65, 386477), (91, 276055), (137, 183365), (155, 162071), (169, 148645), (217, 115765), (403, 62335), (455, 55211), (685, 36673), (845, 29729), (959, 26195), (1085, 23153), (1183, 21235), (1781, 14105), (2015, 12467), (2821, 8905), (4247, 5915), (4795, 5239)]