72206720

素因数分解:

$2^7\times 5^1\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:715

約数の個数: 64

約数和(自身を含む): 173685600

約数和(自身を除く): 101478880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 257, 320, 439, 514, 640, 878, 1028, 1285, 1756, 2056, 2195, 2570, 3512, 4112, 4390, 5140, 7024, 8224, 8780, 10280, 14048, 16448, 17560, 20560, 28096, 32896, 35120, 41120, 56192, 70240, 82240, 112823, 140480, 164480, 225646, 280960, 451292, 564115, 902584, 1128230, 1805168, 2256460, 3610336, 4512920, 7220672, 9025840, 14441344, 18051680, 36103360, 72206720]

約数ペア:

[(1, 72206720), (2, 36103360), (4, 18051680), (5, 14441344), (8, 9025840), (10, 7220672), (16, 4512920), (20, 3610336), (32, 2256460), (40, 1805168), (64, 1128230), (80, 902584), (128, 564115), (160, 451292), (257, 280960), (320, 225646), (439, 164480), (514, 140480), (640, 112823), (878, 82240), (1028, 70240), (1285, 56192), (1756, 41120), (2056, 35120), (2195, 32896), (2570, 28096), (3512, 20560), (4112, 17560), (4390, 16448), (5140, 14048), (7024, 10280), (8224, 8780)]