About the Number

1238887728

1238887727 ← → 1238887729

2進数表記:1001001110101111110110100110000

漢数字表記:十二億三千八百八十八万七千七百二十八

素因数分解:

2 4 × 3 2 × 13 1 × 397 1 × 1667 1

素因数の和:2091
約数の個数: 120
約数和(自身を含む): 3745520688
約数和(自身を除く): 2506632960

約数列:
[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 397, 468, 624, 794, 936, 1191, 1588, 1667, 1872, 2382, 3176, 3334, 3573, 4764, 5001, 5161, 6352, 6668, 7146, 9528, 10002, 10322, 13336, 14292, 15003, 15483, 19056, 20004, 20644, 21671, 26672, 28584, 30006, 30966, 40008, 41288, 43342, 46449, 57168, 60012, 61932, 65013, 80016, 82576, 86684, 92898, 120024, 123864, 130026, 173368, 185796, 195039, 240048, 247728, 260052, 346736, 371592, 390078, 520104, 661799, 743184, 780156, 1040208, 1323598, 1560312, 1985397, 2647196, 3120624, 3970794, 5294392, 5956191, 7941588, 8603387, 10588784, 11912382, 15883176, 17206774, 23824764, 25810161, 31766352, 34413548, 47649528, 51620322, 68827096, 77430483, 95299056, 103240644, 137654192, 154860966, 206481288, 309721932, 412962576, 619443864, 1238887728]

約数ペア:
[(1, 1238887728), (2, 619443864), (3, 412962576), (4, 309721932), (6, 206481288), (8, 154860966), (9, 137654192), (12, 103240644), (13, 95299056), (16, 77430483), (18, 68827096), (24, 51620322), (26, 47649528), (36, 34413548), (39, 31766352), (48, 25810161), (52, 23824764), (72, 17206774), (78, 15883176), (104, 11912382), (117, 10588784), (144, 8603387), (156, 7941588), (208, 5956191), (234, 5294392), (312, 3970794), (397, 3120624), (468, 2647196), (624, 1985397), (794, 1560312), (936, 1323598), (1191, 1040208), (1588, 780156), (1667, 743184), (1872, 661799), (2382, 520104), (3176, 390078), (3334, 371592), (3573, 346736), (4764, 260052), (5001, 247728), (5161, 240048), (6352, 195039), (6668, 185796), (7146, 173368), (9528, 130026), (10002, 123864), (10322, 120024), (13336, 92898), (14292, 86684), (15003, 82576), (15483, 80016), (19056, 65013), (20004, 61932), (20644, 60012), (21671, 57168), (26672, 46449), (28584, 43342), (30006, 41288), (30966, 40008)]

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