128928420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2549}}^1$

素因数の和:2845

約数の個数: 72

約数和(自身を含む): 392628600

約数和(自身を除く): 263700180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 281, 562, 843, 1124, 1405, 1686, 2529, 2549, 2810, 3372, 4215, 5058, 5098, 5620, 7647, 8430, 10116, 10196, 12645, 12745, 15294, 16860, 22941, 25290, 25490, 30588, 38235, 45882, 50580, 50980, 76470, 91764, 114705, 152940, 229410, 458820, 716269, 1432538, 2148807, 2865076, 3581345, 4297614, 6446421, 7162690, 8595228, 10744035, 12892842, 14325380, 21488070, 25785684, 32232105, 42976140, 64464210, 128928420]

約数ペア:

[(1, 128928420), (2, 64464210), (3, 42976140), (4, 32232105), (5, 25785684), (6, 21488070), (9, 14325380), (10, 12892842), (12, 10744035), (15, 8595228), (18, 7162690), (20, 6446421), (30, 4297614), (36, 3581345), (45, 2865076), (60, 2148807), (90, 1432538), (180, 716269), (281, 458820), (562, 229410), (843, 152940), (1124, 114705), (1405, 91764), (1686, 76470), (2529, 50980), (2549, 50580), (2810, 45882), (3372, 38235), (4215, 30588), (5058, 25490), (5098, 25290), (5620, 22941), (7647, 16860), (8430, 15294), (10116, 12745), (10196, 12645)]