21071512

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{433}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 28925288

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 79, 88, 154, 158, 308, 316, 433, 553, 616, 632, 866, 869, 1106, 1732, 1738, 2212, 3031, 3464, 3476, 4424, 4763, 6062, 6083, 6952, 9526, 12124, 12166, 19052, 24248, 24332, 33341, 34207, 38104, 48664, 66682, 68414, 133364, 136828, 239449, 266728, 273656, 376277, 478898, 752554, 957796, 1505108, 1915592, 2633939, 3010216, 5267878, 10535756, 21071512]

約数ペア:

[(1, 21071512), (2, 10535756), (4, 5267878), (7, 3010216), (8, 2633939), (11, 1915592), (14, 1505108), (22, 957796), (28, 752554), (44, 478898), (56, 376277), (77, 273656), (79, 266728), (88, 239449), (154, 136828), (158, 133364), (308, 68414), (316, 66682), (433, 48664), (553, 38104), (616, 34207), (632, 33341), (866, 24332), (869, 24248), (1106, 19052), (1732, 12166), (1738, 12124), (2212, 9526), (3031, 6952), (3464, 6083), (3476, 6062), (4424, 4763)]