21996996

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2144

約数の個数: 48

約数和(自身を含む): 59136000

約数和(自身を除く): 37139004

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 131, 262, 393, 524, 786, 917, 1572, 1834, 1999, 2751, 3668, 3998, 5502, 5997, 7996, 11004, 11994, 13993, 23988, 27986, 41979, 55972, 83958, 167916, 261869, 523738, 785607, 1047476, 1571214, 1833083, 3142428, 3666166, 5499249, 7332332, 10998498, 21996996]

約数ペア:

[(1, 21996996), (2, 10998498), (3, 7332332), (4, 5499249), (6, 3666166), (7, 3142428), (12, 1833083), (14, 1571214), (21, 1047476), (28, 785607), (42, 523738), (84, 261869), (131, 167916), (262, 83958), (393, 55972), (524, 41979), (786, 27986), (917, 23988), (1572, 13993), (1834, 11994), (1999, 11004), (2751, 7996), (3668, 5997), (3998, 5502)]