28290950

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:329

約数の個数: 48

約数和(自身を含む): 55242000

約数和(自身を除く): 26951050

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 109, 145, 179, 218, 290, 358, 545, 725, 895, 1090, 1450, 1790, 2725, 3161, 4475, 5191, 5450, 6322, 8950, 10382, 15805, 19511, 25955, 31610, 39022, 51910, 79025, 97555, 129775, 158050, 195110, 259550, 487775, 565819, 975550, 1131638, 2829095, 5658190, 14145475, 28290950]

約数ペア:

[(1, 28290950), (2, 14145475), (5, 5658190), (10, 2829095), (25, 1131638), (29, 975550), (50, 565819), (58, 487775), (109, 259550), (145, 195110), (179, 158050), (218, 129775), (290, 97555), (358, 79025), (545, 51910), (725, 39022), (895, 31610), (1090, 25955), (1450, 19511), (1790, 15805), (2725, 10382), (3161, 8950), (4475, 6322), (5191, 5450)]