28717675

素因数分解:

$5^2\times 7^3\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 44193600

約数和(自身を除く): 15475925

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 197, 245, 343, 425, 595, 833, 985, 1225, 1379, 1715, 2975, 3349, 4165, 4925, 5831, 6895, 8575, 9653, 16745, 20825, 23443, 29155, 34475, 48265, 67571, 83725, 117215, 145775, 164101, 241325, 337855, 586075, 820505, 1148707, 1689275, 4102525, 5743535, 28717675]

約数ペア:

[(1, 28717675), (5, 5743535), (7, 4102525), (17, 1689275), (25, 1148707), (35, 820505), (49, 586075), (85, 337855), (119, 241325), (175, 164101), (197, 145775), (245, 117215), (343, 83725), (425, 67571), (595, 48265), (833, 34475), (985, 29155), (1225, 23443), (1379, 20825), (1715, 16745), (2975, 9653), (3349, 8575), (4165, 6895), (4925, 5831)]