212151220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{258721}}^1$

素因数の和:258771

約数の個数: 24

約数和(自身を含む): 456385608

約数和(自身を除く): 244234388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 258721, 517442, 1034884, 1293605, 2587210, 5174420, 10607561, 21215122, 42430244, 53037805, 106075610, 212151220]

約数ペア:

[(1, 212151220), (2, 106075610), (4, 53037805), (5, 42430244), (10, 21215122), (20, 10607561), (41, 5174420), (82, 2587210), (164, 1293605), (205, 1034884), (410, 517442), (820, 258721)]