About the Number

388801280

388801279 ← → 388801281

2進数表記:10111001011001010001100000000

漢数字表記:三億八千八百八十万千二百八十

素因数分解:

2 8 × 5 1 × 7 2 × 6199 1

素因数の和:6234
約数の個数: 108
約数和(自身を含む): 1083524400
約数和(自身を除く): 694723120

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1280, 1568, 1792, 1960, 2240, 3136, 3920, 4480, 6199, 6272, 7840, 8960, 12398, 12544, 15680, 24796, 30995, 31360, 43393, 49592, 61990, 62720, 86786, 99184, 123980, 173572, 198368, 216965, 247960, 303751, 347144, 396736, 433930, 495920, 607502, 694288, 793472, 867860, 991840, 1215004, 1388576, 1518755, 1586944, 1735720, 1983680, 2430008, 2777152, 3037510, 3471440, 3967360, 4860016, 5554304, 6075020, 6942880, 7934720, 9720032, 11108608, 12150040, 13885760, 19440064, 24300080, 27771520, 38880128, 48600160, 55543040, 77760256, 97200320, 194400640, 388801280]

約数ペア:
[(1, 388801280), (2, 194400640), (4, 97200320), (5, 77760256), (7, 55543040), (8, 48600160), (10, 38880128), (14, 27771520), (16, 24300080), (20, 19440064), (28, 13885760), (32, 12150040), (35, 11108608), (40, 9720032), (49, 7934720), (56, 6942880), (64, 6075020), (70, 5554304), (80, 4860016), (98, 3967360), (112, 3471440), (128, 3037510), (140, 2777152), (160, 2430008), (196, 1983680), (224, 1735720), (245, 1586944), (256, 1518755), (280, 1388576), (320, 1215004), (392, 991840), (448, 867860), (490, 793472), (560, 694288), (640, 607502), (784, 495920), (896, 433930), (980, 396736), (1120, 347144), (1280, 303751), (1568, 247960), (1792, 216965), (1960, 198368), (2240, 173572), (3136, 123980), (3920, 99184), (4480, 86786), (6199, 62720), (6272, 61990), (7840, 49592), (8960, 43393), (12398, 31360), (12544, 30995), (15680, 24796)]

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