221512960

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2837}}^1$

素因数の和:2919

約数の個数: 72

約数和(自身を含む): 539481096

約数和(自身を除く): 317968136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 2837, 3904, 4880, 5674, 7808, 9760, 11348, 14185, 15616, 19520, 22696, 28370, 39040, 45392, 56740, 78080, 90784, 113480, 173057, 181568, 226960, 346114, 363136, 453920, 692228, 726272, 865285, 907840, 1384456, 1730570, 1815680, 2768912, 3461140, 3631360, 5537824, 6922280, 11075648, 13844560, 22151296, 27689120, 44302592, 55378240, 110756480, 221512960]

約数ペア:

[(1, 221512960), (2, 110756480), (4, 55378240), (5, 44302592), (8, 27689120), (10, 22151296), (16, 13844560), (20, 11075648), (32, 6922280), (40, 5537824), (61, 3631360), (64, 3461140), (80, 2768912), (122, 1815680), (128, 1730570), (160, 1384456), (244, 907840), (256, 865285), (305, 726272), (320, 692228), (488, 453920), (610, 363136), (640, 346114), (976, 226960), (1220, 181568), (1280, 173057), (1952, 113480), (2440, 90784), (2837, 78080), (3904, 56740), (4880, 45392), (5674, 39040), (7808, 28370), (9760, 22696), (11348, 19520), (14185, 15616)]