157772840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64661}}^1$

素因数の和:64733

約数の個数: 32

約数和(自身を含む): 360813960

約数和(自身を除く): 203041120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 64661, 129322, 258644, 323305, 517288, 646610, 1293220, 2586440, 3944321, 7888642, 15777284, 19721605, 31554568, 39443210, 78886420, 157772840]

約数ペア:

[(1, 157772840), (2, 78886420), (4, 39443210), (5, 31554568), (8, 19721605), (10, 15777284), (20, 7888642), (40, 3944321), (61, 2586440), (122, 1293220), (244, 646610), (305, 517288), (488, 323305), (610, 258644), (1220, 129322), (2440, 64661)]