About the Number

129451920

129451919 ← → 129451921

2進数表記:111101101110100011110010000

漢数字表記:一億二千九百四十五万千九百二十

素因数分解:

2 4 × 3 1 × 5 1 × 13 1 × 41491 1

素因数の和:41520
約数の個数: 80
約数和(自身を含む): 432180672
約数和(自身を除く): 302728752

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 41491, 82982, 124473, 165964, 207455, 248946, 331928, 414910, 497892, 539383, 622365, 663856, 829820, 995784, 1078766, 1244730, 1618149, 1659640, 1991568, 2157532, 2489460, 2696915, 3236298, 3319280, 4315064, 4978920, 5393830, 6472596, 8090745, 8630128, 9957840, 10787660, 12945192, 16181490, 21575320, 25890384, 32362980, 43150640, 64725960, 129451920]

約数ペア:
[(1, 129451920), (2, 64725960), (3, 43150640), (4, 32362980), (5, 25890384), (6, 21575320), (8, 16181490), (10, 12945192), (12, 10787660), (13, 9957840), (15, 8630128), (16, 8090745), (20, 6472596), (24, 5393830), (26, 4978920), (30, 4315064), (39, 3319280), (40, 3236298), (48, 2696915), (52, 2489460), (60, 2157532), (65, 1991568), (78, 1659640), (80, 1618149), (104, 1244730), (120, 1078766), (130, 995784), (156, 829820), (195, 663856), (208, 622365), (240, 539383), (260, 497892), (312, 414910), (390, 331928), (520, 248946), (624, 207455), (780, 165964), (1040, 124473), (1560, 82982), (3120, 41491)]

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