30817780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{877}}^1$

素因数の和:1144

約数の個数: 48

約数和(自身を含む): 74342016

約数和(自身を除く): 43524236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 877, 1004, 1255, 1754, 1757, 2510, 3508, 3514, 4385, 5020, 6139, 7028, 8770, 8785, 12278, 17540, 17570, 24556, 30695, 35140, 61390, 122780, 220127, 440254, 880508, 1100635, 1540889, 2201270, 3081778, 4402540, 6163556, 7704445, 15408890, 30817780]

約数ペア:

[(1, 30817780), (2, 15408890), (4, 7704445), (5, 6163556), (7, 4402540), (10, 3081778), (14, 2201270), (20, 1540889), (28, 1100635), (35, 880508), (70, 440254), (140, 220127), (251, 122780), (502, 61390), (877, 35140), (1004, 30695), (1255, 24556), (1754, 17570), (1757, 17540), (2510, 12278), (3508, 8785), (3514, 8770), (4385, 7028), (5020, 6139)]