About the Number

12961890

12961889 ← → 12961891

2進数表記:110001011100100001100010

漢数字表記:千二百九十六万千八百九十

素因数分解:

2 1 × 3 3 × 5 1 × 61 1 × 787 1

素因数の和:864
約数の個数: 64
約数和(自身を含む): 35176320
約数和(自身を除く): 22214430

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 61, 90, 122, 135, 183, 270, 305, 366, 549, 610, 787, 915, 1098, 1574, 1647, 1830, 2361, 2745, 3294, 3935, 4722, 5490, 7083, 7870, 8235, 11805, 14166, 16470, 21249, 23610, 35415, 42498, 48007, 70830, 96014, 106245, 144021, 212490, 240035, 288042, 432063, 480070, 720105, 864126, 1296189, 1440210, 2160315, 2592378, 4320630, 6480945, 12961890]

約数ペア:
[(1, 12961890), (2, 6480945), (3, 4320630), (5, 2592378), (6, 2160315), (9, 1440210), (10, 1296189), (15, 864126), (18, 720105), (27, 480070), (30, 432063), (45, 288042), (54, 240035), (61, 212490), (90, 144021), (122, 106245), (135, 96014), (183, 70830), (270, 48007), (305, 42498), (366, 35415), (549, 23610), (610, 21249), (787, 16470), (915, 14166), (1098, 11805), (1574, 8235), (1647, 7870), (1830, 7083), (2361, 5490), (2745, 4722), (3294, 3935)]

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