19668725

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:701

約数の個数: 24

約数和(自身を含む): 25831680

約数和(自身を除く): 6162955

約数列:

[1, 5, 25, 31, 41, 155, 205, 619, 775, 1025, 1271, 3095, 6355, 15475, 19189, 25379, 31775, 95945, 126895, 479725, 634475, 786749, 3933745, 19668725]

約数ペア:

[(1, 19668725), (5, 3933745), (25, 786749), (31, 634475), (41, 479725), (155, 126895), (205, 95945), (619, 31775), (775, 25379), (1025, 19189), (1271, 15475), (3095, 6355)]