207989720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{126823}}^1$

素因数の和:126875

約数の個数: 32

約数和(自身を含む): 479394720

約数和(自身を除く): 271405000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 126823, 253646, 507292, 634115, 1014584, 1268230, 2536460, 5072920, 5199743, 10399486, 20798972, 25998715, 41597944, 51997430, 103994860, 207989720]

約数ペア:

[(1, 207989720), (2, 103994860), (4, 51997430), (5, 41597944), (8, 25998715), (10, 20798972), (20, 10399486), (40, 5199743), (41, 5072920), (82, 2536460), (164, 1268230), (205, 1014584), (328, 634115), (410, 507292), (820, 253646), (1640, 126823)]