28511120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:384

約数の個数: 80

約数和(自身を含む): 73120320

約数和(自身を除く): 44609200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 179, 181, 220, 358, 362, 440, 716, 724, 880, 895, 905, 1432, 1448, 1790, 1810, 1969, 1991, 2864, 2896, 3580, 3620, 3938, 3982, 7160, 7240, 7876, 7964, 9845, 9955, 14320, 14480, 15752, 15928, 19690, 19910, 31504, 31856, 32399, 39380, 39820, 64798, 78760, 79640, 129596, 157520, 159280, 161995, 259192, 323990, 356389, 518384, 647980, 712778, 1295960, 1425556, 1781945, 2591920, 2851112, 3563890, 5702224, 7127780, 14255560, 28511120]

約数ペア:

[(1, 28511120), (2, 14255560), (4, 7127780), (5, 5702224), (8, 3563890), (10, 2851112), (11, 2591920), (16, 1781945), (20, 1425556), (22, 1295960), (40, 712778), (44, 647980), (55, 518384), (80, 356389), (88, 323990), (110, 259192), (176, 161995), (179, 159280), (181, 157520), (220, 129596), (358, 79640), (362, 78760), (440, 64798), (716, 39820), (724, 39380), (880, 32399), (895, 31856), (905, 31504), (1432, 19910), (1448, 19690), (1790, 15928), (1810, 15752), (1969, 14480), (1991, 14320), (2864, 9955), (2896, 9845), (3580, 7964), (3620, 7876), (3938, 7240), (3982, 7160)]