20916420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49801}}^1$

素因数の和:49820

約数の個数: 48

約数和(自身を含む): 66933888

約数和(自身を除く): 46017468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49801, 99602, 149403, 199204, 249005, 298806, 348607, 498010, 597612, 697214, 747015, 996020, 1045821, 1394428, 1494030, 1743035, 2091642, 2988060, 3486070, 4183284, 5229105, 6972140, 10458210, 20916420]

約数ペア:

[(1, 20916420), (2, 10458210), (3, 6972140), (4, 5229105), (5, 4183284), (6, 3486070), (7, 2988060), (10, 2091642), (12, 1743035), (14, 1494030), (15, 1394428), (20, 1045821), (21, 996020), (28, 747015), (30, 697214), (35, 597612), (42, 498010), (60, 348607), (70, 298806), (84, 249005), (105, 199204), (140, 149403), (210, 99602), (420, 49801)]