81525640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{593}}^1$

素因数の和:1102

約数の個数: 64

約数和(自身を含む): 210418560

約数和(自身を除く): 128892920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 491, 593, 982, 1186, 1964, 2372, 2455, 2965, 3437, 3928, 4151, 4744, 4910, 5930, 6874, 8302, 9820, 11860, 13748, 16604, 17185, 19640, 20755, 23720, 27496, 33208, 34370, 41510, 68740, 83020, 137480, 166040, 291163, 582326, 1164652, 1455815, 2038141, 2329304, 2911630, 4076282, 5823260, 8152564, 10190705, 11646520, 16305128, 20381410, 40762820, 81525640]

約数ペア:

[(1, 81525640), (2, 40762820), (4, 20381410), (5, 16305128), (7, 11646520), (8, 10190705), (10, 8152564), (14, 5823260), (20, 4076282), (28, 2911630), (35, 2329304), (40, 2038141), (56, 1455815), (70, 1164652), (140, 582326), (280, 291163), (491, 166040), (593, 137480), (982, 83020), (1186, 68740), (1964, 41510), (2372, 34370), (2455, 33208), (2965, 27496), (3437, 23720), (3928, 20755), (4151, 19640), (4744, 17185), (4910, 16604), (5930, 13748), (6874, 11860), (8302, 9820)]