20153960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12289}}^1$

素因数の和:12341

約数の個数: 32

約数和(自身を含む): 46456200

約数和(自身を除く): 26302240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12289, 24578, 49156, 61445, 98312, 122890, 245780, 491560, 503849, 1007698, 2015396, 2519245, 4030792, 5038490, 10076980, 20153960]

約数ペア:

[(1, 20153960), (2, 10076980), (4, 5038490), (5, 4030792), (8, 2519245), (10, 2015396), (20, 1007698), (40, 503849), (41, 491560), (82, 245780), (164, 122890), (205, 98312), (328, 61445), (410, 49156), (820, 24578), (1640, 12289)]