19973120

素因数分解:

$2^{10}\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:155

約数の個数: 88

約数和(自身を含む): 49521024

約数和(自身を除く): 29547904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 83, 94, 128, 160, 166, 188, 235, 256, 320, 332, 376, 415, 470, 512, 640, 664, 752, 830, 940, 1024, 1280, 1328, 1504, 1660, 1880, 2560, 2656, 3008, 3320, 3760, 3901, 5120, 5312, 6016, 6640, 7520, 7802, 10624, 12032, 13280, 15040, 15604, 19505, 21248, 24064, 26560, 30080, 31208, 39010, 42496, 48128, 53120, 60160, 62416, 78020, 84992, 106240, 120320, 124832, 156040, 212480, 240640, 249664, 312080, 424960, 499328, 624160, 998656, 1248320, 1997312, 2496640, 3994624, 4993280, 9986560, 19973120]

約数ペア:

[(1, 19973120), (2, 9986560), (4, 4993280), (5, 3994624), (8, 2496640), (10, 1997312), (16, 1248320), (20, 998656), (32, 624160), (40, 499328), (47, 424960), (64, 312080), (80, 249664), (83, 240640), (94, 212480), (128, 156040), (160, 124832), (166, 120320), (188, 106240), (235, 84992), (256, 78020), (320, 62416), (332, 60160), (376, 53120), (415, 48128), (470, 42496), (512, 39010), (640, 31208), (664, 30080), (752, 26560), (830, 24064), (940, 21248), (1024, 19505), (1280, 15604), (1328, 15040), (1504, 13280), (1660, 12032), (1880, 10624), (2560, 7802), (2656, 7520), (3008, 6640), (3320, 6016), (3760, 5312), (3901, 5120)]