20938076

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^2\times {\mathrm{149}}^1$

素因数の和:258

約数の個数: 36

約数和(自身を含む): 39753000

約数和(自身を除く): 18814924

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 149, 172, 298, 596, 817, 1634, 1849, 2831, 3268, 3698, 5662, 6407, 7396, 11324, 12814, 25628, 35131, 70262, 121733, 140524, 243466, 275501, 486932, 551002, 1102004, 5234519, 10469038, 20938076]

約数ペア:

[(1, 20938076), (2, 10469038), (4, 5234519), (19, 1102004), (38, 551002), (43, 486932), (76, 275501), (86, 243466), (149, 140524), (172, 121733), (298, 70262), (596, 35131), (817, 25628), (1634, 12814), (1849, 11324), (2831, 7396), (3268, 6407), (3698, 5662)]