81961915

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2089}}^1$

素因数の和:2179

約数の個数: 32

約数和(自身を含む): 120384000

約数和(自身を除く): 38422085

約数列:

[1, 5, 7, 19, 35, 59, 95, 133, 295, 413, 665, 1121, 2065, 2089, 5605, 7847, 10445, 14623, 39235, 39691, 73115, 123251, 198455, 277837, 616255, 862757, 1389185, 2341769, 4313785, 11708845, 16392383, 81961915]

約数ペア:

[(1, 81961915), (5, 16392383), (7, 11708845), (19, 4313785), (35, 2341769), (59, 1389185), (95, 862757), (133, 616255), (295, 277837), (413, 198455), (665, 123251), (1121, 73115), (2065, 39691), (2089, 39235), (5605, 14623), (7847, 10445)]