About the Number

129120890

129120889 ← → 129120891

2進数表記:111101100100011101001111010

漢数字表記:一億二千九百十二万八百九十

素因数分解:

2 1 × 5 1 × 31 1 × 41 1 × 10159 1

素因数の和:10238
約数の個数: 32
約数和(自身を含む): 245790720
約数和(自身を除く): 116669830

約数列:
[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 2542, 6355, 10159, 12710, 20318, 50795, 101590, 314929, 416519, 629858, 833038, 1574645, 2082595, 3149290, 4165190, 12912089, 25824178, 64560445, 129120890]

約数ペア:
[(1, 129120890), (2, 64560445), (5, 25824178), (10, 12912089), (31, 4165190), (41, 3149290), (62, 2082595), (82, 1574645), (155, 833038), (205, 629858), (310, 416519), (410, 314929), (1271, 101590), (2542, 50795), (6355, 20318), (10159, 12710)]

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