20746180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11399}}^1$

素因数の和:11428

約数の個数: 48

約数和(自身を含む): 53625600

約数和(自身を除く): 32879420

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11399, 22798, 45596, 56995, 79793, 113990, 148187, 159586, 227980, 296374, 319172, 398965, 592748, 740935, 797930, 1037309, 1481870, 1595860, 2074618, 2963740, 4149236, 5186545, 10373090, 20746180]

約数ペア:

[(1, 20746180), (2, 10373090), (4, 5186545), (5, 4149236), (7, 2963740), (10, 2074618), (13, 1595860), (14, 1481870), (20, 1037309), (26, 797930), (28, 740935), (35, 592748), (52, 398965), (65, 319172), (70, 296374), (91, 227980), (130, 159586), (140, 148187), (182, 113990), (260, 79793), (364, 56995), (455, 45596), (910, 22798), (1820, 11399)]