856380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{2039}}^1$

素因数の和:2058

約数の個数: 48

約数和(自身を含む): 2741760

約数和(自身を除く): 1885380

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, 2039, 4078, 6117, 8156, 10195, 12234, 14273, 20390, 24468, 28546, 30585, 40780, 42819, 57092, 61170, 71365, 85638, 122340, 142730, 171276, 214095, 285460, 428190, 856380]

約数ペア:

[(1, 856380), (2, 428190), (3, 285460), (4, 214095), (5, 171276), (6, 142730), (7, 122340), (10, 85638), (12, 71365), (14, 61170), (15, 57092), (20, 42819), (21, 40780), (28, 30585), (30, 28546), (35, 24468), (42, 20390), (60, 14273), (70, 12234), (84, 10195), (105, 8156), (140, 6117), (210, 4078), (420, 2039)]