31505110

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 70761600

約数和(自身を除く): 39256490

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 89, 91, 130, 178, 182, 389, 445, 455, 623, 778, 890, 910, 1157, 1246, 1945, 2314, 2723, 3115, 3890, 5057, 5446, 5785, 6230, 8099, 10114, 11570, 13615, 16198, 25285, 27230, 34621, 35399, 40495, 50570, 69242, 70798, 80990, 173105, 176995, 242347, 346210, 353990, 450073, 484694, 900146, 1211735, 2250365, 2423470, 3150511, 4500730, 6301022, 15752555, 31505110]

約数ペア:

[(1, 31505110), (2, 15752555), (5, 6301022), (7, 4500730), (10, 3150511), (13, 2423470), (14, 2250365), (26, 1211735), (35, 900146), (65, 484694), (70, 450073), (89, 353990), (91, 346210), (130, 242347), (178, 176995), (182, 173105), (389, 80990), (445, 70798), (455, 69242), (623, 50570), (778, 40495), (890, 35399), (910, 34621), (1157, 27230), (1246, 25285), (1945, 16198), (2314, 13615), (2723, 11570), (3115, 10114), (3890, 8099), (5057, 6230), (5446, 5785)]