81786420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8573}}^1$

素因数の和:8641

約数の個数: 72

約数和(自身を含む): 252795816

約数和(自身を除く): 171009396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2385, 3180, 4770, 8573, 9540, 17146, 25719, 34292, 42865, 51438, 77157, 85730, 102876, 128595, 154314, 171460, 257190, 308628, 385785, 454369, 514380, 771570, 908738, 1363107, 1543140, 1817476, 2271845, 2726214, 4089321, 4543690, 5452428, 6815535, 8178642, 9087380, 13631070, 16357284, 20446605, 27262140, 40893210, 81786420]

約数ペア:

[(1, 81786420), (2, 40893210), (3, 27262140), (4, 20446605), (5, 16357284), (6, 13631070), (9, 9087380), (10, 8178642), (12, 6815535), (15, 5452428), (18, 4543690), (20, 4089321), (30, 2726214), (36, 2271845), (45, 1817476), (53, 1543140), (60, 1363107), (90, 908738), (106, 771570), (159, 514380), (180, 454369), (212, 385785), (265, 308628), (318, 257190), (477, 171460), (530, 154314), (636, 128595), (795, 102876), (954, 85730), (1060, 77157), (1590, 51438), (1908, 42865), (2385, 34292), (3180, 25719), (4770, 17146), (8573, 9540)]