393920520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{468953}}^1$

素因数の和:468974

約数の個数: 64

約数和(自身を含む): 1350587520

約数和(自身を除く): 956667000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 468953, 937906, 1406859, 1875812, 2344765, 2813718, 3282671, 3751624, 4689530, 5627436, 6565342, 7034295, 9379060, 9848013, 11254872, 13130684, 14068590, 16413355, 18758120, 19696026, 26261368, 28137180, 32826710, 39392052, 49240065, 56274360, 65653420, 78784104, 98480130, 131306840, 196960260, 393920520]

約数ペア:

[(1, 393920520), (2, 196960260), (3, 131306840), (4, 98480130), (5, 78784104), (6, 65653420), (7, 56274360), (8, 49240065), (10, 39392052), (12, 32826710), (14, 28137180), (15, 26261368), (20, 19696026), (21, 18758120), (24, 16413355), (28, 14068590), (30, 13130684), (35, 11254872), (40, 9848013), (42, 9379060), (56, 7034295), (60, 6565342), (70, 5627436), (84, 4689530), (105, 3751624), (120, 3282671), (140, 2813718), (168, 2344765), (210, 1875812), (280, 1406859), (420, 937906), (840, 468953)]