155239840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19801}}^1$

素因数の和:19830

約数の個数: 72

約数和(自身を含む): 426653892

約数和(自身を除く): 271414052

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 19801, 39602, 79204, 99005, 138607, 158408, 198010, 277214, 316816, 396020, 554428, 633632, 693035, 792040, 970249, 1108856, 1386070, 1584080, 1940498, 2217712, 2772140, 3168160, 3880996, 4435424, 4851245, 5544280, 7761992, 9702490, 11088560, 15523984, 19404980, 22177120, 31047968, 38809960, 77619920, 155239840]

約数ペア:

[(1, 155239840), (2, 77619920), (4, 38809960), (5, 31047968), (7, 22177120), (8, 19404980), (10, 15523984), (14, 11088560), (16, 9702490), (20, 7761992), (28, 5544280), (32, 4851245), (35, 4435424), (40, 3880996), (49, 3168160), (56, 2772140), (70, 2217712), (80, 1940498), (98, 1584080), (112, 1386070), (140, 1108856), (160, 970249), (196, 792040), (224, 693035), (245, 633632), (280, 554428), (392, 396020), (490, 316816), (560, 277214), (784, 198010), (980, 158408), (1120, 138607), (1568, 99005), (1960, 79204), (3920, 39602), (7840, 19801)]