123280400

素因数分解:

$2^4\times 5^2\times {\mathrm{311}}^1\times {\mathrm{991}}^1$

素因数の和:1320

約数の個数: 60

約数和(自身を含む): 297433344

約数和(自身を除く): 174152944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 311, 400, 622, 991, 1244, 1555, 1982, 2488, 3110, 3964, 4955, 4976, 6220, 7775, 7928, 9910, 12440, 15550, 15856, 19820, 24775, 24880, 31100, 39640, 49550, 62200, 79280, 99100, 124400, 198200, 308201, 396400, 616402, 1232804, 1541005, 2465608, 3082010, 4931216, 6164020, 7705025, 12328040, 15410050, 24656080, 30820100, 61640200, 123280400]

約数ペア:

[(1, 123280400), (2, 61640200), (4, 30820100), (5, 24656080), (8, 15410050), (10, 12328040), (16, 7705025), (20, 6164020), (25, 4931216), (40, 3082010), (50, 2465608), (80, 1541005), (100, 1232804), (200, 616402), (311, 396400), (400, 308201), (622, 198200), (991, 124400), (1244, 99100), (1555, 79280), (1982, 62200), (2488, 49550), (3110, 39640), (3964, 31100), (4955, 24880), (4976, 24775), (6220, 19820), (7775, 15856), (7928, 15550), (9910, 12440)]