19980756

素因数分解:

$2^2\times 3^4\times {\mathrm{83}}^1\times {\mathrm{743}}^1$

素因数の和:842

約数の個数: 60

約数和(自身を含む): 52934112

約数和(自身を除く): 32953356

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 83, 108, 162, 166, 249, 324, 332, 498, 743, 747, 996, 1486, 1494, 2229, 2241, 2972, 2988, 4458, 4482, 6687, 6723, 8916, 8964, 13374, 13446, 20061, 26748, 26892, 40122, 60183, 61669, 80244, 120366, 123338, 185007, 240732, 246676, 370014, 555021, 740028, 1110042, 1665063, 2220084, 3330126, 4995189, 6660252, 9990378, 19980756]

約数ペア:

[(1, 19980756), (2, 9990378), (3, 6660252), (4, 4995189), (6, 3330126), (9, 2220084), (12, 1665063), (18, 1110042), (27, 740028), (36, 555021), (54, 370014), (81, 246676), (83, 240732), (108, 185007), (162, 123338), (166, 120366), (249, 80244), (324, 61669), (332, 60183), (498, 40122), (743, 26892), (747, 26748), (996, 20061), (1486, 13446), (1494, 13374), (2229, 8964), (2241, 8916), (2972, 6723), (2988, 6687), (4458, 4482)]