20587658

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20054902

約数列:

[1, 2, 7, 13, 14, 26, 31, 41, 62, 82, 89, 91, 178, 182, 217, 287, 403, 434, 533, 574, 623, 806, 1066, 1157, 1246, 1271, 2314, 2542, 2759, 2821, 3649, 3731, 5518, 5642, 7298, 7462, 8099, 8897, 16198, 16523, 17794, 19313, 25543, 33046, 35867, 38626, 47437, 51086, 71734, 94874, 113119, 115661, 226238, 231322, 251069, 332059, 502138, 664118, 791833, 1470547, 1583666, 2941094, 10293829, 20587658]

約数ペア:

[(1, 20587658), (2, 10293829), (7, 2941094), (13, 1583666), (14, 1470547), (26, 791833), (31, 664118), (41, 502138), (62, 332059), (82, 251069), (89, 231322), (91, 226238), (178, 115661), (182, 113119), (217, 94874), (287, 71734), (403, 51086), (434, 47437), (533, 38626), (574, 35867), (623, 33046), (806, 25543), (1066, 19313), (1157, 17794), (1246, 16523), (1271, 16198), (2314, 8897), (2542, 8099), (2759, 7462), (2821, 7298), (3649, 5642), (3731, 5518)]