20544640

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{683}}^1$

素因数の和:749

約数の個数: 64

約数和(自身を含む): 50232960

約数和(自身を除く): 29688320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 683, 752, 940, 1366, 1504, 1880, 2732, 3008, 3415, 3760, 5464, 6016, 6830, 7520, 10928, 13660, 15040, 21856, 27320, 30080, 32101, 43712, 54640, 64202, 87424, 109280, 128404, 160505, 218560, 256808, 321010, 437120, 513616, 642020, 1027232, 1284040, 2054464, 2568080, 4108928, 5136160, 10272320, 20544640]

約数ペア:

[(1, 20544640), (2, 10272320), (4, 5136160), (5, 4108928), (8, 2568080), (10, 2054464), (16, 1284040), (20, 1027232), (32, 642020), (40, 513616), (47, 437120), (64, 321010), (80, 256808), (94, 218560), (128, 160505), (160, 128404), (188, 109280), (235, 87424), (320, 64202), (376, 54640), (470, 43712), (640, 32101), (683, 30080), (752, 27320), (940, 21856), (1366, 15040), (1504, 13660), (1880, 10928), (2732, 7520), (3008, 6830), (3415, 6016), (3760, 5464)]