21175140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50417}}^1$

素因数の和:50436

約数の個数: 48

約数和(自身を含む): 67761792

約数和(自身を除く): 46586652

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, 50417, 100834, 151251, 201668, 252085, 302502, 352919, 504170, 605004, 705838, 756255, 1008340, 1058757, 1411676, 1512510, 1764595, 2117514, 3025020, 3529190, 4235028, 5293785, 7058380, 10587570, 21175140]

約数ペア:

[(1, 21175140), (2, 10587570), (3, 7058380), (4, 5293785), (5, 4235028), (6, 3529190), (7, 3025020), (10, 2117514), (12, 1764595), (14, 1512510), (15, 1411676), (20, 1058757), (21, 1008340), (28, 756255), (30, 705838), (35, 605004), (42, 504170), (60, 352919), (70, 302502), (84, 252085), (105, 201668), (140, 151251), (210, 100834), (420, 50417)]