257839740

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{691}}^2$

素因数の和:1400

約数の個数: 72

約数和(自身を含む): 803330640

約数和(自身を除く): 545490900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 691, 1382, 2073, 2764, 3455, 4146, 6219, 6910, 8292, 10365, 12438, 13820, 18657, 20730, 24876, 31095, 37314, 41460, 62190, 74628, 93285, 124380, 186570, 373140, 477481, 954962, 1432443, 1909924, 2387405, 2864886, 4297329, 4774810, 5729772, 7162215, 8594658, 9549620, 12891987, 14324430, 17189316, 21486645, 25783974, 28648860, 42973290, 51567948, 64459935, 85946580, 128919870, 257839740]

約数ペア:

[(1, 257839740), (2, 128919870), (3, 85946580), (4, 64459935), (5, 51567948), (6, 42973290), (9, 28648860), (10, 25783974), (12, 21486645), (15, 17189316), (18, 14324430), (20, 12891987), (27, 9549620), (30, 8594658), (36, 7162215), (45, 5729772), (54, 4774810), (60, 4297329), (90, 2864886), (108, 2387405), (135, 1909924), (180, 1432443), (270, 954962), (540, 477481), (691, 373140), (1382, 186570), (2073, 124380), (2764, 93285), (3455, 74628), (4146, 62190), (6219, 41460), (6910, 37314), (8292, 31095), (10365, 24876), (12438, 20730), (13820, 18657)]