81989908

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20477}}^1$

素因数の和:20512

約数の個数: 48

約数和(自身を含む): 192657024

約数和(自身を除く): 110667116

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 20477, 40954, 81908, 143339, 225247, 266201, 286678, 450494, 532402, 573356, 900988, 1064804, 1576729, 1863407, 2928211, 3153458, 3726814, 5856422, 6306916, 7453628, 11712844, 20497477, 40994954, 81989908]

約数ペア:

[(1, 81989908), (2, 40994954), (4, 20497477), (7, 11712844), (11, 7453628), (13, 6306916), (14, 5856422), (22, 3726814), (26, 3153458), (28, 2928211), (44, 1863407), (52, 1576729), (77, 1064804), (91, 900988), (143, 573356), (154, 532402), (182, 450494), (286, 286678), (308, 266201), (364, 225247), (572, 143339), (1001, 81908), (2002, 40954), (4004, 20477)]