320819600

素因数分解:

$2^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:517

約数の個数: 120

約数和(自身を含む): 808508520

約数和(自身を除く): 487688920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 53, 74, 80, 100, 106, 148, 185, 200, 212, 265, 296, 370, 400, 409, 424, 530, 592, 740, 818, 848, 925, 1060, 1325, 1480, 1636, 1850, 1961, 2045, 2120, 2650, 2960, 3272, 3700, 3922, 4090, 4240, 5300, 6544, 7400, 7844, 8180, 9805, 10225, 10600, 14800, 15133, 15688, 16360, 19610, 20450, 21200, 21677, 30266, 31376, 32720, 39220, 40900, 43354, 49025, 60532, 75665, 78440, 81800, 86708, 98050, 108385, 121064, 151330, 156880, 163600, 173416, 196100, 216770, 242128, 302660, 346832, 378325, 392200, 433540, 541925, 605320, 756650, 784400, 802049, 867080, 1083850, 1210640, 1513300, 1604098, 1734160, 2167700, 3026600, 3208196, 4010245, 4335400, 6053200, 6416392, 8020490, 8670800, 12832784, 16040980, 20051225, 32081960, 40102450, 64163920, 80204900, 160409800, 320819600]

約数ペア:

[(1, 320819600), (2, 160409800), (4, 80204900), (5, 64163920), (8, 40102450), (10, 32081960), (16, 20051225), (20, 16040980), (25, 12832784), (37, 8670800), (40, 8020490), (50, 6416392), (53, 6053200), (74, 4335400), (80, 4010245), (100, 3208196), (106, 3026600), (148, 2167700), (185, 1734160), (200, 1604098), (212, 1513300), (265, 1210640), (296, 1083850), (370, 867080), (400, 802049), (409, 784400), (424, 756650), (530, 605320), (592, 541925), (740, 433540), (818, 392200), (848, 378325), (925, 346832), (1060, 302660), (1325, 242128), (1480, 216770), (1636, 196100), (1850, 173416), (1961, 163600), (2045, 156880), (2120, 151330), (2650, 121064), (2960, 108385), (3272, 98050), (3700, 86708), (3922, 81800), (4090, 78440), (4240, 75665), (5300, 60532), (6544, 49025), (7400, 43354), (7844, 40900), (8180, 39220), (9805, 32720), (10225, 31376), (10600, 30266), (14800, 21677), (15133, 21200), (15688, 20450), (16360, 19610)]