21185450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2963}}^1$

素因数の和:2999

約数の個数: 48

約数和(自身を含む): 46309536

約数和(自身を除く): 25124086

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 130, 143, 275, 286, 325, 550, 650, 715, 1430, 2963, 3575, 5926, 7150, 14815, 29630, 32593, 38519, 65186, 74075, 77038, 148150, 162965, 192595, 325930, 385190, 423709, 814825, 847418, 962975, 1629650, 1925950, 2118545, 4237090, 10592725, 21185450]

約数ペア:

[(1, 21185450), (2, 10592725), (5, 4237090), (10, 2118545), (11, 1925950), (13, 1629650), (22, 962975), (25, 847418), (26, 814825), (50, 423709), (55, 385190), (65, 325930), (110, 192595), (130, 162965), (143, 148150), (275, 77038), (286, 74075), (325, 65186), (550, 38519), (650, 32593), (715, 29630), (1430, 14815), (2963, 7150), (3575, 5926)]