28503880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 67092480

約数和(自身を除く): 38588600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 181, 248, 254, 310, 362, 508, 620, 635, 724, 905, 1016, 1240, 1270, 1448, 1810, 2540, 3620, 3937, 5080, 5611, 7240, 7874, 11222, 15748, 19685, 22444, 22987, 28055, 31496, 39370, 44888, 45974, 56110, 78740, 91948, 112220, 114935, 157480, 183896, 224440, 229870, 459740, 712597, 919480, 1425194, 2850388, 3562985, 5700776, 7125970, 14251940, 28503880]

約数ペア:

[(1, 28503880), (2, 14251940), (4, 7125970), (5, 5700776), (8, 3562985), (10, 2850388), (20, 1425194), (31, 919480), (40, 712597), (62, 459740), (124, 229870), (127, 224440), (155, 183896), (181, 157480), (248, 114935), (254, 112220), (310, 91948), (362, 78740), (508, 56110), (620, 45974), (635, 44888), (724, 39370), (905, 31496), (1016, 28055), (1240, 22987), (1270, 22444), (1448, 19685), (1810, 15748), (2540, 11222), (3620, 7874), (3937, 7240), (5080, 5611)]