About the Number

128670720

128670719 ← → 128670721

2進数表記:111101010110101110000000000

漢数字表記:一億二千八百六十七万七百二十

素因数分解:

2 10 × 3 1 × 5 1 × 8377 1

素因数の和:8405
約数の個数: 88
約数和(自身を含む): 411594384
約数和(自身を除く): 282923664

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1024, 1280, 1536, 1920, 2560, 3072, 3840, 5120, 7680, 8377, 15360, 16754, 25131, 33508, 41885, 50262, 67016, 83770, 100524, 125655, 134032, 167540, 201048, 251310, 268064, 335080, 402096, 502620, 536128, 670160, 804192, 1005240, 1072256, 1340320, 1608384, 2010480, 2144512, 2680640, 3216768, 4020960, 4289024, 5361280, 6433536, 8041920, 8578048, 10722560, 12867072, 16083840, 21445120, 25734144, 32167680, 42890240, 64335360, 128670720]

約数ペア:
[(1, 128670720), (2, 64335360), (3, 42890240), (4, 32167680), (5, 25734144), (6, 21445120), (8, 16083840), (10, 12867072), (12, 10722560), (15, 8578048), (16, 8041920), (20, 6433536), (24, 5361280), (30, 4289024), (32, 4020960), (40, 3216768), (48, 2680640), (60, 2144512), (64, 2010480), (80, 1608384), (96, 1340320), (120, 1072256), (128, 1005240), (160, 804192), (192, 670160), (240, 536128), (256, 502620), (320, 402096), (384, 335080), (480, 268064), (512, 251310), (640, 201048), (768, 167540), (960, 134032), (1024, 125655), (1280, 100524), (1536, 83770), (1920, 67016), (2560, 50262), (3072, 41885), (3840, 33508), (5120, 25131), (7680, 16754), (8377, 15360)]

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