66858428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 147571200

約数和(自身を除く): 80712772

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 71, 91, 142, 169, 182, 199, 284, 338, 364, 398, 497, 676, 796, 923, 994, 1183, 1393, 1846, 1988, 2366, 2587, 2786, 3692, 4732, 5174, 5572, 6461, 10348, 11999, 12922, 14129, 18109, 23998, 25844, 28258, 33631, 36218, 47996, 56516, 67262, 72436, 83993, 98903, 134524, 167986, 183677, 197806, 235417, 335972, 367354, 395612, 470834, 734708, 941668, 1285739, 2387801, 2571478, 4775602, 5142956, 9551204, 16714607, 33429214, 66858428]

約数ペア:

[(1, 66858428), (2, 33429214), (4, 16714607), (7, 9551204), (13, 5142956), (14, 4775602), (26, 2571478), (28, 2387801), (52, 1285739), (71, 941668), (91, 734708), (142, 470834), (169, 395612), (182, 367354), (199, 335972), (284, 235417), (338, 197806), (364, 183677), (398, 167986), (497, 134524), (676, 98903), (796, 83993), (923, 72436), (994, 67262), (1183, 56516), (1393, 47996), (1846, 36218), (1988, 33631), (2366, 28258), (2587, 25844), (2786, 23998), (3692, 18109), (4732, 14129), (5174, 12922), (5572, 11999), (6461, 10348)]