66689475

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{18919}}^1$

素因数の和:18979

約数の個数: 24

約数和(自身を含む): 112611840

約数和(自身を除く): 45922365

約数列:

[1, 3, 5, 15, 25, 47, 75, 141, 235, 705, 1175, 3525, 18919, 56757, 94595, 283785, 472975, 889193, 1418925, 2667579, 4445965, 13337895, 22229825, 66689475]

約数ペア:

[(1, 66689475), (3, 22229825), (5, 13337895), (15, 4445965), (25, 2667579), (47, 1418925), (75, 889193), (141, 472975), (235, 283785), (705, 94595), (1175, 56757), (3525, 18919)]