19742996

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{743}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 43163904

約数和(自身を除く): 23420908

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 73, 91, 146, 182, 292, 364, 511, 743, 949, 1022, 1486, 1898, 2044, 2972, 3796, 5201, 6643, 9659, 10402, 13286, 19318, 20804, 26572, 38636, 54239, 67613, 108478, 135226, 216956, 270452, 379673, 705107, 759346, 1410214, 1518692, 2820428, 4935749, 9871498, 19742996]

約数ペア:

[(1, 19742996), (2, 9871498), (4, 4935749), (7, 2820428), (13, 1518692), (14, 1410214), (26, 759346), (28, 705107), (52, 379673), (73, 270452), (91, 216956), (146, 135226), (182, 108478), (292, 67613), (364, 54239), (511, 38636), (743, 26572), (949, 20804), (1022, 19318), (1486, 13286), (1898, 10402), (2044, 9659), (2972, 6643), (3796, 5201)]