81003720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1321}}^1$

素因数の和:1415

約数の個数: 128

約数和(自身を含む): 281744640

約数和(自身を除く): 200740920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 73, 84, 105, 120, 140, 146, 168, 210, 219, 280, 292, 365, 420, 438, 511, 584, 730, 840, 876, 1022, 1095, 1321, 1460, 1533, 1752, 2044, 2190, 2555, 2642, 2920, 3066, 3963, 4088, 4380, 5110, 5284, 6132, 6605, 7665, 7926, 8760, 9247, 10220, 10568, 12264, 13210, 15330, 15852, 18494, 19815, 20440, 26420, 27741, 30660, 31704, 36988, 39630, 46235, 52840, 55482, 61320, 73976, 79260, 92470, 96433, 110964, 138705, 158520, 184940, 192866, 221928, 277410, 289299, 369880, 385732, 482165, 554820, 578598, 675031, 771464, 964330, 1109640, 1157196, 1350062, 1446495, 1928660, 2025093, 2314392, 2700124, 2892990, 3375155, 3857320, 4050186, 5400248, 5785980, 6750310, 8100372, 10125465, 11571960, 13500620, 16200744, 20250930, 27001240, 40501860, 81003720]

約数ペア:

[(1, 81003720), (2, 40501860), (3, 27001240), (4, 20250930), (5, 16200744), (6, 13500620), (7, 11571960), (8, 10125465), (10, 8100372), (12, 6750310), (14, 5785980), (15, 5400248), (20, 4050186), (21, 3857320), (24, 3375155), (28, 2892990), (30, 2700124), (35, 2314392), (40, 2025093), (42, 1928660), (56, 1446495), (60, 1350062), (70, 1157196), (73, 1109640), (84, 964330), (105, 771464), (120, 675031), (140, 578598), (146, 554820), (168, 482165), (210, 385732), (219, 369880), (280, 289299), (292, 277410), (365, 221928), (420, 192866), (438, 184940), (511, 158520), (584, 138705), (730, 110964), (840, 96433), (876, 92470), (1022, 79260), (1095, 73976), (1321, 61320), (1460, 55482), (1533, 52840), (1752, 46235), (2044, 39630), (2190, 36988), (2555, 31704), (2642, 30660), (2920, 27741), (3066, 26420), (3963, 20440), (4088, 19815), (4380, 18494), (5110, 15852), (5284, 15330), (6132, 13210), (6605, 12264), (7665, 10568), (7926, 10220), (8760, 9247)]