20474700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:647

約数の個数: 72

約数和(自身を含む): 59787840

約数和(自身を除く): 39313140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 139, 150, 278, 300, 417, 491, 556, 695, 834, 982, 1390, 1473, 1668, 1964, 2085, 2455, 2780, 2946, 3475, 4170, 4910, 5892, 6950, 7365, 8340, 9820, 10425, 12275, 13900, 14730, 20850, 24550, 29460, 36825, 41700, 49100, 68249, 73650, 136498, 147300, 204747, 272996, 341245, 409494, 682490, 818988, 1023735, 1364980, 1706225, 2047470, 3412450, 4094940, 5118675, 6824900, 10237350, 20474700]

約数ペア:

[(1, 20474700), (2, 10237350), (3, 6824900), (4, 5118675), (5, 4094940), (6, 3412450), (10, 2047470), (12, 1706225), (15, 1364980), (20, 1023735), (25, 818988), (30, 682490), (50, 409494), (60, 341245), (75, 272996), (100, 204747), (139, 147300), (150, 136498), (278, 73650), (300, 68249), (417, 49100), (491, 41700), (556, 36825), (695, 29460), (834, 24550), (982, 20850), (1390, 14730), (1473, 13900), (1668, 12275), (1964, 10425), (2085, 9820), (2455, 8340), (2780, 7365), (2946, 6950), (3475, 5892), (4170, 4910)]