81175220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{30517}}^1$

素因数の和:30552

約数の個数: 48

約数和(自身を含む): 205080960

約数和(自身を除く): 123905740

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 30517, 61034, 122068, 152585, 213619, 305170, 427238, 579823, 610340, 854476, 1068095, 1159646, 2136190, 2319292, 2899115, 4058761, 4272380, 5798230, 8117522, 11596460, 16235044, 20293805, 40587610, 81175220]

約数ペア:

[(1, 81175220), (2, 40587610), (4, 20293805), (5, 16235044), (7, 11596460), (10, 8117522), (14, 5798230), (19, 4272380), (20, 4058761), (28, 2899115), (35, 2319292), (38, 2136190), (70, 1159646), (76, 1068095), (95, 854476), (133, 610340), (140, 579823), (190, 427238), (266, 305170), (380, 213619), (532, 152585), (665, 122068), (1330, 61034), (2660, 30517)]