21161210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{601}}^1$

素因数の和:1118

約数の個数: 32

約数和(自身を含む): 43690752

約数和(自身を除く): 22529542

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 503, 601, 1006, 1202, 2515, 3005, 3521, 4207, 5030, 6010, 7042, 8414, 17605, 21035, 35210, 42070, 302303, 604606, 1511515, 2116121, 3023030, 4232242, 10580605, 21161210]

約数ペア:

[(1, 21161210), (2, 10580605), (5, 4232242), (7, 3023030), (10, 2116121), (14, 1511515), (35, 604606), (70, 302303), (503, 42070), (601, 35210), (1006, 21035), (1202, 17605), (2515, 8414), (3005, 7042), (3521, 6010), (4207, 5030)]