81940688

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{165203}}^1$

素因数の和:165242

約数の個数: 20

約数和(自身を含む): 163882368

約数和(自身を除く): 81941680

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 165203, 330406, 660812, 1321624, 2643248, 5121293, 10242586, 20485172, 40970344, 81940688]

約数ペア:

[(1, 81940688), (2, 40970344), (4, 20485172), (8, 10242586), (16, 5121293), (31, 2643248), (62, 1321624), (124, 660812), (248, 330406), (496, 165203)]