About the Number

247942890

247942889 ← → 247942891

2進数表記:1110110001110100111011101010

漢数字表記:二億四千七百九十四万二千八百九十

素因数分解:

2 1 × 3 3 × 5 1 × 13 1 × 70639 1

素因数の和:70668
約数の個数: 64
約数和(自身を含む): 712051200
約数和(自身を除く): 464108310

約数列:
[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 90, 117, 130, 135, 195, 234, 270, 351, 390, 585, 702, 1170, 1755, 3510, 70639, 141278, 211917, 353195, 423834, 635751, 706390, 918307, 1059585, 1271502, 1836614, 1907253, 2119170, 2754921, 3178755, 3814506, 4591535, 5509842, 6357510, 8264763, 9183070, 9536265, 13774605, 16529526, 19072530, 24794289, 27549210, 41323815, 49588578, 82647630, 123971445, 247942890]

約数ペア:
[(1, 247942890), (2, 123971445), (3, 82647630), (5, 49588578), (6, 41323815), (9, 27549210), (10, 24794289), (13, 19072530), (15, 16529526), (18, 13774605), (26, 9536265), (27, 9183070), (30, 8264763), (39, 6357510), (45, 5509842), (54, 4591535), (65, 3814506), (78, 3178755), (90, 2754921), (117, 2119170), (130, 1907253), (135, 1836614), (195, 1271502), (234, 1059585), (270, 918307), (351, 706390), (390, 635751), (585, 423834), (702, 353195), (1170, 211917), (1755, 141278), (3510, 70639)]

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