28119550

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{89}}^2$

素因数の和:261

約数の個数: 36

約数和(自身を含む): 53641656

約数和(自身を除く): 25522106

約数列:

[1, 2, 5, 10, 25, 50, 71, 89, 142, 178, 355, 445, 710, 890, 1775, 2225, 3550, 4450, 6319, 7921, 12638, 15842, 31595, 39605, 63190, 79210, 157975, 198025, 315950, 396050, 562391, 1124782, 2811955, 5623910, 14059775, 28119550]

約数ペア:

[(1, 28119550), (2, 14059775), (5, 5623910), (10, 2811955), (25, 1124782), (50, 562391), (71, 396050), (89, 315950), (142, 198025), (178, 157975), (355, 79210), (445, 63190), (710, 39605), (890, 31595), (1775, 15842), (2225, 12638), (3550, 7921), (4450, 6319)]