221703625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 331269120

約数和(自身を除く): 109565495

約数列:

[1, 5, 11, 13, 25, 55, 65, 79, 125, 143, 157, 275, 325, 395, 715, 785, 869, 1027, 1375, 1625, 1727, 1975, 2041, 3575, 3925, 4345, 5135, 8635, 9875, 10205, 11297, 12403, 17875, 19625, 21725, 22451, 25675, 43175, 51025, 56485, 62015, 108625, 112255, 128375, 136433, 161239, 215875, 255125, 282425, 310075, 561275, 682165, 806195, 1412125, 1550375, 1773629, 2806375, 3410825, 4030975, 8868145, 17054125, 20154875, 44340725, 221703625]

約数ペア:

[(1, 221703625), (5, 44340725), (11, 20154875), (13, 17054125), (25, 8868145), (55, 4030975), (65, 3410825), (79, 2806375), (125, 1773629), (143, 1550375), (157, 1412125), (275, 806195), (325, 682165), (395, 561275), (715, 310075), (785, 282425), (869, 255125), (1027, 215875), (1375, 161239), (1625, 136433), (1727, 128375), (1975, 112255), (2041, 108625), (3575, 62015), (3925, 56485), (4345, 51025), (5135, 43175), (8635, 25675), (9875, 22451), (10205, 21725), (11297, 19625), (12403, 17875)]