1640291391

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{14923}}^1$

素因数の和:15017

約数の個数: 40

約数和(自身を含む): 2600357760

約数和(自身を除く): 960066369

約数列:

[1, 3, 9, 23, 27, 59, 69, 81, 177, 207, 531, 621, 1357, 1593, 1863, 4071, 4779, 12213, 14923, 36639, 44769, 109917, 134307, 343229, 402921, 880457, 1029687, 1208763, 2641371, 3089061, 7924113, 9267183, 20250511, 23772339, 27801549, 60751533, 71317017, 182254599, 546763797, 1640291391]

約数ペア:

[(1, 1640291391), (3, 546763797), (9, 182254599), (23, 71317017), (27, 60751533), (59, 27801549), (69, 23772339), (81, 20250511), (177, 9267183), (207, 7924113), (531, 3089061), (621, 2641371), (1357, 1208763), (1593, 1029687), (1863, 880457), (4071, 402921), (4779, 343229), (12213, 134307), (14923, 109917), (36639, 44769)]