About the Number

131215840

131215839 ← → 131215841

2進数表記:111110100100011000111100000

漢数字表記:一億三千百二十一万五千八百四十

素因数分解:

2 5 × 5 1 × 7 1 × 79 1 × 1483 1

素因数の和:1584
約数の個数: 96
約数和(自身を含む): 359009280
約数和(自身を除く): 227793440

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 79, 80, 112, 140, 158, 160, 224, 280, 316, 395, 553, 560, 632, 790, 1106, 1120, 1264, 1483, 1580, 2212, 2528, 2765, 2966, 3160, 4424, 5530, 5932, 6320, 7415, 8848, 10381, 11060, 11864, 12640, 14830, 17696, 20762, 22120, 23728, 29660, 41524, 44240, 47456, 51905, 59320, 83048, 88480, 103810, 117157, 118640, 166096, 207620, 234314, 237280, 332192, 415240, 468628, 585785, 820099, 830480, 937256, 1171570, 1640198, 1660960, 1874512, 2343140, 3280396, 3749024, 4100495, 4686280, 6560792, 8200990, 9372560, 13121584, 16401980, 18745120, 26243168, 32803960, 65607920, 131215840]

約数ペア:
[(1, 131215840), (2, 65607920), (4, 32803960), (5, 26243168), (7, 18745120), (8, 16401980), (10, 13121584), (14, 9372560), (16, 8200990), (20, 6560792), (28, 4686280), (32, 4100495), (35, 3749024), (40, 3280396), (56, 2343140), (70, 1874512), (79, 1660960), (80, 1640198), (112, 1171570), (140, 937256), (158, 830480), (160, 820099), (224, 585785), (280, 468628), (316, 415240), (395, 332192), (553, 237280), (560, 234314), (632, 207620), (790, 166096), (1106, 118640), (1120, 117157), (1264, 103810), (1483, 88480), (1580, 83048), (2212, 59320), (2528, 51905), (2765, 47456), (2966, 44240), (3160, 41524), (4424, 29660), (5530, 23728), (5932, 22120), (6320, 20762), (7415, 17696), (8848, 14830), (10381, 12640), (11060, 11864)]

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