72317840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1560

約数の個数: 80

約数和(自身を含む): 194451840

約数和(自身を除く): 122134000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 623, 712, 890, 1246, 1424, 1451, 1780, 2492, 2902, 3115, 3560, 4984, 5804, 6230, 7120, 7255, 9968, 10157, 11608, 12460, 14510, 20314, 23216, 24920, 29020, 40628, 49840, 50785, 58040, 81256, 101570, 116080, 129139, 162512, 203140, 258278, 406280, 516556, 645695, 812560, 903973, 1033112, 1291390, 1807946, 2066224, 2582780, 3615892, 4519865, 5165560, 7231784, 9039730, 10331120, 14463568, 18079460, 36158920, 72317840]

約数ペア:

[(1, 72317840), (2, 36158920), (4, 18079460), (5, 14463568), (7, 10331120), (8, 9039730), (10, 7231784), (14, 5165560), (16, 4519865), (20, 3615892), (28, 2582780), (35, 2066224), (40, 1807946), (56, 1291390), (70, 1033112), (80, 903973), (89, 812560), (112, 645695), (140, 516556), (178, 406280), (280, 258278), (356, 203140), (445, 162512), (560, 129139), (623, 116080), (712, 101570), (890, 81256), (1246, 58040), (1424, 50785), (1451, 49840), (1780, 40628), (2492, 29020), (2902, 24920), (3115, 23216), (3560, 20314), (4984, 14510), (5804, 12460), (6230, 11608), (7120, 10157), (7255, 9968)]