About the Number

209401890

209401889 ← → 209401891

2進数表記:1100011110110011100000100010

漢数字表記:二億九百四十万千八百九十

素因数分解:

2 1 × 3 1 × 5 1 × 23 1 × 157 1 × 1933 1

素因数の和:2123
約数の個数: 64
約数和(自身を含む): 528028416
約数和(自身を除く): 318626526

約数列:
[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 157, 230, 314, 345, 471, 690, 785, 942, 1570, 1933, 2355, 3611, 3866, 4710, 5799, 7222, 9665, 10833, 11598, 18055, 19330, 21666, 28995, 36110, 44459, 54165, 57990, 88918, 108330, 133377, 222295, 266754, 303481, 444590, 606962, 666885, 910443, 1333770, 1517405, 1820886, 3034810, 4552215, 6980063, 9104430, 13960126, 20940189, 34900315, 41880378, 69800630, 104700945, 209401890]

約数ペア:
[(1, 209401890), (2, 104700945), (3, 69800630), (5, 41880378), (6, 34900315), (10, 20940189), (15, 13960126), (23, 9104430), (30, 6980063), (46, 4552215), (69, 3034810), (115, 1820886), (138, 1517405), (157, 1333770), (230, 910443), (314, 666885), (345, 606962), (471, 444590), (690, 303481), (785, 266754), (942, 222295), (1570, 133377), (1933, 108330), (2355, 88918), (3611, 57990), (3866, 54165), (4710, 44459), (5799, 36110), (7222, 28995), (9665, 21666), (10833, 19330), (11598, 18055)]

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