20125840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{433}}^1$

素因数の和:536

約数の個数: 80

約数和(自身を含む): 54246528

約数和(自身を除く): 34120688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 83, 112, 140, 166, 280, 332, 415, 433, 560, 581, 664, 830, 866, 1162, 1328, 1660, 1732, 2165, 2324, 2905, 3031, 3320, 3464, 4330, 4648, 5810, 6062, 6640, 6928, 8660, 9296, 11620, 12124, 15155, 17320, 23240, 24248, 30310, 34640, 35939, 46480, 48496, 60620, 71878, 121240, 143756, 179695, 242480, 251573, 287512, 359390, 503146, 575024, 718780, 1006292, 1257865, 1437560, 2012584, 2515730, 2875120, 4025168, 5031460, 10062920, 20125840]

約数ペア:

[(1, 20125840), (2, 10062920), (4, 5031460), (5, 4025168), (7, 2875120), (8, 2515730), (10, 2012584), (14, 1437560), (16, 1257865), (20, 1006292), (28, 718780), (35, 575024), (40, 503146), (56, 359390), (70, 287512), (80, 251573), (83, 242480), (112, 179695), (140, 143756), (166, 121240), (280, 71878), (332, 60620), (415, 48496), (433, 46480), (560, 35939), (581, 34640), (664, 30310), (830, 24248), (866, 23240), (1162, 17320), (1328, 15155), (1660, 12124), (1732, 11620), (2165, 9296), (2324, 8660), (2905, 6928), (3031, 6640), (3320, 6062), (3464, 5810), (4330, 4648)]