16712020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 42336000

約数和(自身を除く): 25623980

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 130, 170, 190, 199, 221, 247, 260, 323, 340, 380, 398, 442, 494, 646, 796, 884, 988, 995, 1105, 1235, 1292, 1615, 1990, 2210, 2470, 2587, 3230, 3383, 3781, 3980, 4199, 4420, 4940, 5174, 6460, 6766, 7562, 8398, 10348, 12935, 13532, 15124, 16796, 16915, 18905, 20995, 25870, 33830, 37810, 41990, 43979, 49153, 51740, 64277, 67660, 75620, 83980, 87958, 98306, 128554, 175916, 196612, 219895, 245765, 257108, 321385, 439790, 491530, 642770, 835601, 879580, 983060, 1285540, 1671202, 3342404, 4178005, 8356010, 16712020]

約数ペア:

[(1, 16712020), (2, 8356010), (4, 4178005), (5, 3342404), (10, 1671202), (13, 1285540), (17, 983060), (19, 879580), (20, 835601), (26, 642770), (34, 491530), (38, 439790), (52, 321385), (65, 257108), (68, 245765), (76, 219895), (85, 196612), (95, 175916), (130, 128554), (170, 98306), (190, 87958), (199, 83980), (221, 75620), (247, 67660), (260, 64277), (323, 51740), (340, 49153), (380, 43979), (398, 41990), (442, 37810), (494, 33830), (646, 25870), (796, 20995), (884, 18905), (988, 16915), (995, 16796), (1105, 15124), (1235, 13532), (1292, 12935), (1615, 10348), (1990, 8398), (2210, 7562), (2470, 6766), (2587, 6460), (3230, 5174), (3383, 4940), (3781, 4420), (3980, 4199)]