201689720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{523}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 470845440

約数和(自身を除く): 269155720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 311, 523, 620, 622, 1046, 1240, 1244, 1555, 2092, 2488, 2615, 3110, 4184, 5230, 6220, 9641, 10460, 12440, 16213, 19282, 20920, 32426, 38564, 48205, 64852, 77128, 81065, 96410, 129704, 162130, 162653, 192820, 324260, 325306, 385640, 648520, 650612, 813265, 1301224, 1626530, 3253060, 5042243, 6506120, 10084486, 20168972, 25211215, 40337944, 50422430, 100844860, 201689720]

約数ペア:

[(1, 201689720), (2, 100844860), (4, 50422430), (5, 40337944), (8, 25211215), (10, 20168972), (20, 10084486), (31, 6506120), (40, 5042243), (62, 3253060), (124, 1626530), (155, 1301224), (248, 813265), (310, 650612), (311, 648520), (523, 385640), (620, 325306), (622, 324260), (1046, 192820), (1240, 162653), (1244, 162130), (1555, 129704), (2092, 96410), (2488, 81065), (2615, 77128), (3110, 64852), (4184, 48205), (5230, 38564), (6220, 32426), (9641, 20920), (10460, 19282), (12440, 16213)]