About the Number

172391440

172391439 ← → 172391441

2進数表記:1010010001100111110000010000

漢数字表記:一億七千二百三十九万千四百四十

素因数分解:

2 4 × 5 1 × 13 1 × 23 1 × 7207 1

素因数の和:7256
約数の個数: 80
約数和(自身を含む): 450471168
約数和(自身を除く): 278079728

約数列:
[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1495, 1840, 2392, 2990, 4784, 5980, 7207, 11960, 14414, 23920, 28828, 36035, 57656, 72070, 93691, 115312, 144140, 165761, 187382, 288280, 331522, 374764, 468455, 576560, 663044, 749528, 828805, 936910, 1326088, 1499056, 1657610, 1873820, 2154893, 2652176, 3315220, 3747640, 4309786, 6630440, 7495280, 8619572, 10774465, 13260880, 17239144, 21548930, 34478288, 43097860, 86195720, 172391440]

約数ペア:
[(1, 172391440), (2, 86195720), (4, 43097860), (5, 34478288), (8, 21548930), (10, 17239144), (13, 13260880), (16, 10774465), (20, 8619572), (23, 7495280), (26, 6630440), (40, 4309786), (46, 3747640), (52, 3315220), (65, 2652176), (80, 2154893), (92, 1873820), (104, 1657610), (115, 1499056), (130, 1326088), (184, 936910), (208, 828805), (230, 749528), (260, 663044), (299, 576560), (368, 468455), (460, 374764), (520, 331522), (598, 288280), (920, 187382), (1040, 165761), (1196, 144140), (1495, 115312), (1840, 93691), (2392, 72070), (2990, 57656), (4784, 36035), (5980, 28828), (7207, 23920), (11960, 14414)]

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