18921204

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{719}}^1$

素因数の和:789

約数の個数: 72

約数和(自身を含む): 51891840

約数和(自身を除く): 32970636

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 43, 51, 68, 86, 102, 129, 153, 172, 204, 258, 306, 387, 516, 612, 719, 731, 774, 1438, 1462, 1548, 2157, 2193, 2876, 2924, 4314, 4386, 6471, 6579, 8628, 8772, 12223, 12942, 13158, 24446, 25884, 26316, 30917, 36669, 48892, 61834, 73338, 92751, 110007, 123668, 146676, 185502, 220014, 278253, 371004, 440028, 525589, 556506, 1051178, 1113012, 1576767, 2102356, 3153534, 4730301, 6307068, 9460602, 18921204]

約数ペア:

[(1, 18921204), (2, 9460602), (3, 6307068), (4, 4730301), (6, 3153534), (9, 2102356), (12, 1576767), (17, 1113012), (18, 1051178), (34, 556506), (36, 525589), (43, 440028), (51, 371004), (68, 278253), (86, 220014), (102, 185502), (129, 146676), (153, 123668), (172, 110007), (204, 92751), (258, 73338), (306, 61834), (387, 48892), (516, 36669), (612, 30917), (719, 26316), (731, 25884), (774, 24446), (1438, 13158), (1462, 12942), (1548, 12223), (2157, 8772), (2193, 8628), (2876, 6579), (2924, 6471), (4314, 4386)]