205820980

素因数分解:

$2^2\times 5^1\times {\mathrm{947}}^1\times {\mathrm{10867}}^1$

素因数の和:11823

約数の個数: 24

約数和(自身を含む): 432720288

約数和(自身を除く): 226899308

約数列:

[1, 2, 4, 5, 10, 20, 947, 1894, 3788, 4735, 9470, 10867, 18940, 21734, 43468, 54335, 108670, 217340, 10291049, 20582098, 41164196, 51455245, 102910490, 205820980]

約数ペア:

[(1, 205820980), (2, 102910490), (4, 51455245), (5, 41164196), (10, 20582098), (20, 10291049), (947, 217340), (1894, 108670), (3788, 54335), (4735, 43468), (9470, 21734), (10867, 18940)]