About the Number

402990

402989 ← → 402991

2進数表記:1100010011000101110

漢数字表記:四十万二千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 19 1 × 101 1

素因数の和:137
約数の個数: 64
約数和(自身を含む): 1175040
約数和(自身を除く): 772050

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 101, 105, 114, 133, 190, 202, 210, 266, 285, 303, 399, 505, 570, 606, 665, 707, 798, 1010, 1330, 1414, 1515, 1919, 1995, 2121, 3030, 3535, 3838, 3990, 4242, 5757, 7070, 9595, 10605, 11514, 13433, 19190, 21210, 26866, 28785, 40299, 57570, 67165, 80598, 134330, 201495, 402990]

約数ペア:
[(1, 402990), (2, 201495), (3, 134330), (5, 80598), (6, 67165), (7, 57570), (10, 40299), (14, 28785), (15, 26866), (19, 21210), (21, 19190), (30, 13433), (35, 11514), (38, 10605), (42, 9595), (57, 7070), (70, 5757), (95, 4242), (101, 3990), (105, 3838), (114, 3535), (133, 3030), (190, 2121), (202, 1995), (210, 1919), (266, 1515), (285, 1414), (303, 1330), (399, 1010), (505, 798), (570, 707), (606, 665)]

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