20019860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4931}}^1$

素因数の和:4976

約数の個数: 48

約数和(自身を含む): 49714560

約数和(自身を除く): 29694700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4931, 9862, 19724, 24655, 34517, 49310, 69034, 98620, 138068, 142999, 172585, 285998, 345170, 571996, 690340, 714995, 1000993, 1429990, 2001986, 2859980, 4003972, 5004965, 10009930, 20019860]

約数ペア:

[(1, 20019860), (2, 10009930), (4, 5004965), (5, 4003972), (7, 2859980), (10, 2001986), (14, 1429990), (20, 1000993), (28, 714995), (29, 690340), (35, 571996), (58, 345170), (70, 285998), (116, 172585), (140, 142999), (145, 138068), (203, 98620), (290, 69034), (406, 49310), (580, 34517), (812, 24655), (1015, 19724), (2030, 9862), (4060, 4931)]