20722100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4229}}^1$

素因数の和:4257

約数の個数: 54

約数和(自身を含む): 52320870

約数和(自身を除く): 31598770

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4229, 4900, 8458, 16916, 21145, 29603, 42290, 59206, 84580, 105725, 118412, 148015, 207221, 211450, 296030, 414442, 422900, 592060, 740075, 828884, 1036105, 1480150, 2072210, 2960300, 4144420, 5180525, 10361050, 20722100]

約数ペア:

[(1, 20722100), (2, 10361050), (4, 5180525), (5, 4144420), (7, 2960300), (10, 2072210), (14, 1480150), (20, 1036105), (25, 828884), (28, 740075), (35, 592060), (49, 422900), (50, 414442), (70, 296030), (98, 211450), (100, 207221), (140, 148015), (175, 118412), (196, 105725), (245, 84580), (350, 59206), (490, 42290), (700, 29603), (980, 21145), (1225, 16916), (2450, 8458), (4229, 4900)]