19995220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7517}}^1$

素因数の和:7552

約数の個数: 48

約数和(自身を含む): 50520960

約数和(自身を除く): 30525740

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, 7517, 15034, 30068, 37585, 52619, 75170, 105238, 142823, 150340, 210476, 263095, 285646, 526190, 571292, 714115, 999761, 1052380, 1428230, 1999522, 2856460, 3999044, 4998805, 9997610, 19995220]

約数ペア:

[(1, 19995220), (2, 9997610), (4, 4998805), (5, 3999044), (7, 2856460), (10, 1999522), (14, 1428230), (19, 1052380), (20, 999761), (28, 714115), (35, 571292), (38, 526190), (70, 285646), (76, 263095), (95, 210476), (133, 150340), (140, 142823), (190, 105238), (266, 75170), (380, 52619), (532, 37585), (665, 30068), (1330, 15034), (2660, 7517)]