31009615

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 51287040

約数和(自身を除く): 20277425

約数列:

[1, 5, 7, 13, 17, 19, 35, 65, 85, 91, 95, 119, 133, 211, 221, 247, 323, 455, 595, 665, 1055, 1105, 1235, 1477, 1547, 1615, 1729, 2261, 2743, 3587, 4009, 4199, 7385, 7735, 8645, 11305, 13715, 17935, 19201, 20045, 20995, 25109, 28063, 29393, 46631, 52117, 68153, 96005, 125545, 140315, 146965, 233155, 260585, 326417, 340765, 364819, 477071, 885989, 1632085, 1824095, 2385355, 4429945, 6201923, 31009615]

約数ペア:

[(1, 31009615), (5, 6201923), (7, 4429945), (13, 2385355), (17, 1824095), (19, 1632085), (35, 885989), (65, 477071), (85, 364819), (91, 340765), (95, 326417), (119, 260585), (133, 233155), (211, 146965), (221, 140315), (247, 125545), (323, 96005), (455, 68153), (595, 52117), (665, 46631), (1055, 29393), (1105, 28063), (1235, 25109), (1477, 20995), (1547, 20045), (1615, 19201), (1729, 17935), (2261, 13715), (2743, 11305), (3587, 8645), (4009, 7735), (4199, 7385)]