51189680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20641}}^1$

素因数の和:20685

約数の個数: 40

約数和(自身を含む): 122861184

約数和(自身を除く): 71671504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 20641, 41282, 82564, 103205, 165128, 206410, 330256, 412820, 639871, 825640, 1279742, 1651280, 2559484, 3199355, 5118968, 6398710, 10237936, 12797420, 25594840, 51189680]

約数ペア:

[(1, 51189680), (2, 25594840), (4, 12797420), (5, 10237936), (8, 6398710), (10, 5118968), (16, 3199355), (20, 2559484), (31, 1651280), (40, 1279742), (62, 825640), (80, 639871), (124, 412820), (155, 330256), (248, 206410), (310, 165128), (496, 103205), (620, 82564), (1240, 41282), (2480, 20641)]