20891980920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{631}}^1\times {\mathrm{275911}}^1$

素因数の和:276556

約数の個数: 64

約数和(自身を含む): 62775498240

約数和(自身を除く): 41883517320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 631, 1262, 1893, 2524, 3155, 3786, 5048, 6310, 7572, 9465, 12620, 15144, 18930, 25240, 37860, 75720, 275911, 551822, 827733, 1103644, 1379555, 1655466, 2207288, 2759110, 3310932, 4138665, 5518220, 6621864, 8277330, 11036440, 16554660, 33109320, 174099841, 348199682, 522299523, 696399364, 870499205, 1044599046, 1392798728, 1740998410, 2089198092, 2611497615, 3481996820, 4178396184, 5222995230, 6963993640, 10445990460, 20891980920]

約数ペア:

[(1, 20891980920), (2, 10445990460), (3, 6963993640), (4, 5222995230), (5, 4178396184), (6, 3481996820), (8, 2611497615), (10, 2089198092), (12, 1740998410), (15, 1392798728), (20, 1044599046), (24, 870499205), (30, 696399364), (40, 522299523), (60, 348199682), (120, 174099841), (631, 33109320), (1262, 16554660), (1893, 11036440), (2524, 8277330), (3155, 6621864), (3786, 5518220), (5048, 4138665), (6310, 3310932), (7572, 2759110), (9465, 2207288), (12620, 1655466), (15144, 1379555), (18930, 1103644), (25240, 827733), (37860, 551822), (75720, 275911)]