128570820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306121}}^1$

素因数の和:306140

約数の個数: 48

約数和(自身を含む): 411427968

約数和(自身を除く): 282857148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306121, 612242, 918363, 1224484, 1530605, 1836726, 2142847, 3061210, 3673452, 4285694, 4591815, 6122420, 6428541, 8571388, 9183630, 10714235, 12857082, 18367260, 21428470, 25714164, 32142705, 42856940, 64285410, 128570820]

約数ペア:

[(1, 128570820), (2, 64285410), (3, 42856940), (4, 32142705), (5, 25714164), (6, 21428470), (7, 18367260), (10, 12857082), (12, 10714235), (14, 9183630), (15, 8571388), (20, 6428541), (21, 6122420), (28, 4591815), (30, 4285694), (35, 3673452), (42, 3061210), (60, 2142847), (70, 1836726), (84, 1530605), (105, 1224484), (140, 918363), (210, 612242), (420, 306121)]