81597425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 130705920

約数和(自身を除く): 49108495

約数列:

[1, 5, 7, 13, 25, 31, 35, 65, 89, 91, 155, 169, 175, 217, 325, 403, 445, 455, 623, 775, 845, 1085, 1157, 1183, 2015, 2225, 2275, 2759, 2821, 3115, 4225, 5239, 5425, 5785, 5915, 8099, 10075, 13795, 14105, 15041, 15575, 19313, 26195, 28925, 29575, 35867, 36673, 40495, 68975, 70525, 75205, 96565, 105287, 130975, 179335, 183365, 202475, 251069, 376025, 466271, 482825, 526435, 896675, 916825, 1255345, 2331355, 2632175, 3263897, 6276725, 11656775, 16319485, 81597425]

約数ペア:

[(1, 81597425), (5, 16319485), (7, 11656775), (13, 6276725), (25, 3263897), (31, 2632175), (35, 2331355), (65, 1255345), (89, 916825), (91, 896675), (155, 526435), (169, 482825), (175, 466271), (217, 376025), (325, 251069), (403, 202475), (445, 183365), (455, 179335), (623, 130975), (775, 105287), (845, 96565), (1085, 75205), (1157, 70525), (1183, 68975), (2015, 40495), (2225, 36673), (2275, 35867), (2759, 29575), (2821, 28925), (3115, 26195), (4225, 19313), (5239, 15575), (5425, 15041), (5785, 14105), (5915, 13795), (8099, 10075)]