28915520

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{829}}^1$

素因数の和:955

約数の個数: 56

約数和(自身を含む): 69570600

約数和(自身を除く): 40655080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 829, 872, 1090, 1658, 1744, 2180, 3316, 3488, 4145, 4360, 6632, 6976, 8290, 8720, 13264, 16580, 17440, 26528, 33160, 34880, 53056, 66320, 90361, 132640, 180722, 265280, 361444, 451805, 722888, 903610, 1445776, 1807220, 2891552, 3614440, 5783104, 7228880, 14457760, 28915520]

約数ペア:

[(1, 28915520), (2, 14457760), (4, 7228880), (5, 5783104), (8, 3614440), (10, 2891552), (16, 1807220), (20, 1445776), (32, 903610), (40, 722888), (64, 451805), (80, 361444), (109, 265280), (160, 180722), (218, 132640), (320, 90361), (436, 66320), (545, 53056), (829, 34880), (872, 33160), (1090, 26528), (1658, 17440), (1744, 16580), (2180, 13264), (3316, 8720), (3488, 8290), (4145, 6976), (4360, 6632)]