20792100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9901}}^1$

素因数の和:9925

約数の個数: 72

約数和(自身を含む): 68759488

約数和(自身を除く): 47967388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9901, 19802, 29703, 39604, 49505, 59406, 69307, 99010, 118812, 138614, 148515, 198020, 207921, 247525, 277228, 297030, 346535, 415842, 495050, 594060, 693070, 742575, 831684, 990100, 1039605, 1386140, 1485150, 1732675, 2079210, 2970300, 3465350, 4158420, 5198025, 6930700, 10396050, 20792100]

約数ペア:

[(1, 20792100), (2, 10396050), (3, 6930700), (4, 5198025), (5, 4158420), (6, 3465350), (7, 2970300), (10, 2079210), (12, 1732675), (14, 1485150), (15, 1386140), (20, 1039605), (21, 990100), (25, 831684), (28, 742575), (30, 693070), (35, 594060), (42, 495050), (50, 415842), (60, 346535), (70, 297030), (75, 277228), (84, 247525), (100, 207921), (105, 198020), (140, 148515), (150, 138614), (175, 118812), (210, 99010), (300, 69307), (350, 59406), (420, 49505), (525, 39604), (700, 29703), (1050, 19802), (2100, 9901)]