21680260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6733}}^1$

素因数の和:6772

約数の個数: 48

約数和(自身を含む): 54302976

約数和(自身を除く): 32622716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6733, 13466, 26932, 33665, 47131, 67330, 94262, 134660, 154859, 188524, 235655, 309718, 471310, 619436, 774295, 942620, 1084013, 1548590, 2168026, 3097180, 4336052, 5420065, 10840130, 21680260]

約数ペア:

[(1, 21680260), (2, 10840130), (4, 5420065), (5, 4336052), (7, 3097180), (10, 2168026), (14, 1548590), (20, 1084013), (23, 942620), (28, 774295), (35, 619436), (46, 471310), (70, 309718), (92, 235655), (115, 188524), (140, 154859), (161, 134660), (230, 94262), (322, 67330), (460, 47131), (644, 33665), (805, 26932), (1610, 13466), (3220, 6733)]