213889715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{1321}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 287836416

約数和(自身を除く): 73946701

約数列:

[1, 5, 13, 47, 53, 65, 235, 265, 611, 689, 1321, 2491, 3055, 3445, 6605, 12455, 17173, 32383, 62087, 70013, 85865, 161915, 310435, 350065, 807131, 910169, 3290611, 4035655, 4550845, 16453055, 42777943, 213889715]

約数ペア:

[(1, 213889715), (5, 42777943), (13, 16453055), (47, 4550845), (53, 4035655), (65, 3290611), (235, 910169), (265, 807131), (611, 350065), (689, 310435), (1321, 161915), (2491, 85865), (3055, 70013), (3445, 62087), (6605, 32383), (12455, 17173)]