21583328

素因数分解:

$2^5\times {\mathrm{13}}^3\times {\mathrm{307}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 46181520

約数和(自身を除く): 24598192

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 307, 338, 416, 614, 676, 1228, 1352, 2197, 2456, 2704, 3991, 4394, 4912, 5408, 7982, 8788, 9824, 15964, 17576, 31928, 35152, 51883, 63856, 70304, 103766, 127712, 207532, 415064, 674479, 830128, 1348958, 1660256, 2697916, 5395832, 10791664, 21583328]

約数ペア:

[(1, 21583328), (2, 10791664), (4, 5395832), (8, 2697916), (13, 1660256), (16, 1348958), (26, 830128), (32, 674479), (52, 415064), (104, 207532), (169, 127712), (208, 103766), (307, 70304), (338, 63856), (416, 51883), (614, 35152), (676, 31928), (1228, 17576), (1352, 15964), (2197, 9824), (2456, 8788), (2704, 7982), (3991, 5408), (4394, 4912)]