628635670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{401}}^1$

素因数の和:841

約数の個数: 64

約数和(自身を含む): 1264273920

約数和(自身を除く): 635638250

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 389, 401, 403, 778, 802, 806, 1945, 2005, 2015, 3890, 4010, 4030, 5057, 5213, 10114, 10426, 12059, 12431, 24118, 24862, 25285, 26065, 50570, 52130, 60295, 62155, 120590, 124310, 155989, 156767, 161603, 311978, 313534, 323206, 779945, 783835, 808015, 1559890, 1567670, 1616030, 2027857, 4055714, 4835659, 9671318, 10139285, 20278570, 24178295, 48356590, 62863567, 125727134, 314317835, 628635670]

約数ペア:

[(1, 628635670), (2, 314317835), (5, 125727134), (10, 62863567), (13, 48356590), (26, 24178295), (31, 20278570), (62, 10139285), (65, 9671318), (130, 4835659), (155, 4055714), (310, 2027857), (389, 1616030), (401, 1567670), (403, 1559890), (778, 808015), (802, 783835), (806, 779945), (1945, 323206), (2005, 313534), (2015, 311978), (3890, 161603), (4010, 156767), (4030, 155989), (5057, 124310), (5213, 120590), (10114, 62155), (10426, 60295), (12059, 52130), (12431, 50570), (24118, 26065), (24862, 25285)]