7127780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 16511040

約数和(自身を除く): 9383260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 181, 220, 358, 362, 716, 724, 895, 905, 1790, 1810, 1969, 1991, 3580, 3620, 3938, 3982, 7876, 7964, 9845, 9955, 19690, 19910, 32399, 39380, 39820, 64798, 129596, 161995, 323990, 356389, 647980, 712778, 1425556, 1781945, 3563890, 7127780]

約数ペア:

[(1, 7127780), (2, 3563890), (4, 1781945), (5, 1425556), (10, 712778), (11, 647980), (20, 356389), (22, 323990), (44, 161995), (55, 129596), (110, 64798), (179, 39820), (181, 39380), (220, 32399), (358, 19910), (362, 19690), (716, 9955), (724, 9845), (895, 7964), (905, 7876), (1790, 3982), (1810, 3938), (1969, 3620), (1991, 3580)]