About the Number

1994591988

1994591987 ← → 1994591989

2進数表記:1110110111000110000111011110100

漢数字表記:十九億九千四百五十九万千九百八十八

素因数分解:

2 2 × 3 2 × 97 1 × 179 1 × 3191 1

素因数の和:3477
約数の個数: 72
約数和(自身を含む): 5123926080
約数和(自身を除く): 3129334092

約数列:
[1, 2, 3, 4, 6, 9, 12, 18, 36, 97, 179, 194, 291, 358, 388, 537, 582, 716, 873, 1074, 1164, 1611, 1746, 2148, 3191, 3222, 3492, 6382, 6444, 9573, 12764, 17363, 19146, 28719, 34726, 38292, 52089, 57438, 69452, 104178, 114876, 156267, 208356, 309527, 312534, 571189, 619054, 625068, 928581, 1142378, 1238108, 1713567, 1857162, 2284756, 2785743, 3427134, 3714324, 5140701, 5571486, 6854268, 10281402, 11142972, 20562804, 55405333, 110810666, 166215999, 221621332, 332431998, 498647997, 664863996, 997295994, 1994591988]

約数ペア:
[(1, 1994591988), (2, 997295994), (3, 664863996), (4, 498647997), (6, 332431998), (9, 221621332), (12, 166215999), (18, 110810666), (36, 55405333), (97, 20562804), (179, 11142972), (194, 10281402), (291, 6854268), (358, 5571486), (388, 5140701), (537, 3714324), (582, 3427134), (716, 2785743), (873, 2284756), (1074, 1857162), (1164, 1713567), (1611, 1238108), (1746, 1142378), (2148, 928581), (3191, 625068), (3222, 619054), (3492, 571189), (6382, 312534), (6444, 309527), (9573, 208356), (12764, 156267), (17363, 114876), (19146, 104178), (28719, 69452), (34726, 57438), (38292, 52089)]

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