21102165

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2161}}^1$

素因数の和:2210

約数の個数: 48

約数和(自身を含む): 43170816

約数和(自身を除く): 22068651

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1953, 2161, 3255, 6483, 9765, 10805, 15127, 19449, 32415, 45381, 66991, 75635, 97245, 136143, 200973, 226905, 334955, 468937, 602919, 680715, 1004865, 1406811, 2344685, 3014595, 4220433, 7034055, 21102165]

約数ペア:

[(1, 21102165), (3, 7034055), (5, 4220433), (7, 3014595), (9, 2344685), (15, 1406811), (21, 1004865), (31, 680715), (35, 602919), (45, 468937), (63, 334955), (93, 226905), (105, 200973), (155, 136143), (217, 97245), (279, 75635), (315, 66991), (465, 45381), (651, 32415), (1085, 19449), (1395, 15127), (1953, 10805), (2161, 9765), (3255, 6483)]