28731280

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{4327}}^1$

素因数の和:4423

約数の個数: 40

約数和(自身を含む): 67620672

約数和(自身を除く): 38889392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3320, 4327, 6640, 8654, 17308, 21635, 34616, 43270, 69232, 86540, 173080, 346160, 359141, 718282, 1436564, 1795705, 2873128, 3591410, 5746256, 7182820, 14365640, 28731280]

約数ペア:

[(1, 28731280), (2, 14365640), (4, 7182820), (5, 5746256), (8, 3591410), (10, 2873128), (16, 1795705), (20, 1436564), (40, 718282), (80, 359141), (83, 346160), (166, 173080), (332, 86540), (415, 69232), (664, 43270), (830, 34616), (1328, 21635), (1660, 17308), (3320, 8654), (4327, 6640)]