28190360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:912

約数の個数: 64

約数和(自身を含む): 70156800

約数和(自身を除く): 41966440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 632, 790, 811, 869, 1580, 1622, 1738, 3160, 3244, 3476, 4055, 4345, 6488, 6952, 8110, 8690, 8921, 16220, 17380, 17842, 32440, 34760, 35684, 44605, 64069, 71368, 89210, 128138, 178420, 256276, 320345, 356840, 512552, 640690, 704759, 1281380, 1409518, 2562760, 2819036, 3523795, 5638072, 7047590, 14095180, 28190360]

約数ペア:

[(1, 28190360), (2, 14095180), (4, 7047590), (5, 5638072), (8, 3523795), (10, 2819036), (11, 2562760), (20, 1409518), (22, 1281380), (40, 704759), (44, 640690), (55, 512552), (79, 356840), (88, 320345), (110, 256276), (158, 178420), (220, 128138), (316, 89210), (395, 71368), (440, 64069), (632, 44605), (790, 35684), (811, 34760), (869, 32440), (1580, 17842), (1622, 17380), (1738, 16220), (3160, 8921), (3244, 8690), (3476, 8110), (4055, 6952), (4345, 6488)]