280111220

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1\times {\mathrm{1109}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 600279120

約数和(自身を除く): 320167900

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 173, 292, 346, 365, 692, 730, 865, 1109, 1460, 1730, 2218, 3460, 4436, 5545, 11090, 12629, 22180, 25258, 50516, 63145, 80957, 126290, 161914, 191857, 252580, 323828, 383714, 404785, 767428, 809570, 959285, 1619140, 1918570, 3837140, 14005561, 28011122, 56022244, 70027805, 140055610, 280111220]

約数ペア:

[(1, 280111220), (2, 140055610), (4, 70027805), (5, 56022244), (10, 28011122), (20, 14005561), (73, 3837140), (146, 1918570), (173, 1619140), (292, 959285), (346, 809570), (365, 767428), (692, 404785), (730, 383714), (865, 323828), (1109, 252580), (1460, 191857), (1730, 161914), (2218, 126290), (3460, 80957), (4436, 63145), (5545, 50516), (11090, 25258), (12629, 22180)]