87681988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 168182784

約数和(自身を除く): 80500796

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 157, 172, 191, 314, 382, 628, 731, 764, 1462, 2669, 2924, 3247, 5338, 6494, 6751, 8213, 10676, 12988, 13502, 16426, 27004, 29987, 32852, 59974, 114767, 119948, 139621, 229534, 279242, 459068, 509779, 558484, 1019558, 1289441, 2039116, 2578882, 5157764, 21920497, 43840994, 87681988]

約数ペア:

[(1, 87681988), (2, 43840994), (4, 21920497), (17, 5157764), (34, 2578882), (43, 2039116), (68, 1289441), (86, 1019558), (157, 558484), (172, 509779), (191, 459068), (314, 279242), (382, 229534), (628, 139621), (731, 119948), (764, 114767), (1462, 59974), (2669, 32852), (2924, 29987), (3247, 27004), (5338, 16426), (6494, 13502), (6751, 12988), (8213, 10676)]