19741020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25309}}^1$

素因数の和:25334

約数の個数: 48

約数和(自身を含む): 59529120

約数和(自身を除く): 39788100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25309, 50618, 75927, 101236, 126545, 151854, 253090, 303708, 329017, 379635, 506180, 658034, 759270, 987051, 1316068, 1518540, 1645085, 1974102, 3290170, 3948204, 4935255, 6580340, 9870510, 19741020]

約数ペア:

[(1, 19741020), (2, 9870510), (3, 6580340), (4, 4935255), (5, 3948204), (6, 3290170), (10, 1974102), (12, 1645085), (13, 1518540), (15, 1316068), (20, 987051), (26, 759270), (30, 658034), (39, 506180), (52, 379635), (60, 329017), (65, 303708), (78, 253090), (130, 151854), (156, 126545), (195, 101236), (260, 75927), (390, 50618), (780, 25309)]