21521556

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2083}}^1$

素因数の和:2141

約数の個数: 72

約数和(自身を含む): 63720384

約数和(自身を除く): 42198828

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 41, 42, 63, 82, 84, 123, 126, 164, 246, 252, 287, 369, 492, 574, 738, 861, 1148, 1476, 1722, 2083, 2583, 3444, 4166, 5166, 6249, 8332, 10332, 12498, 14581, 18747, 24996, 29162, 37494, 43743, 58324, 74988, 85403, 87486, 131229, 170806, 174972, 256209, 262458, 341612, 512418, 524916, 597821, 768627, 1024836, 1195642, 1537254, 1793463, 2391284, 3074508, 3586926, 5380389, 7173852, 10760778, 21521556]

約数ペア:

[(1, 21521556), (2, 10760778), (3, 7173852), (4, 5380389), (6, 3586926), (7, 3074508), (9, 2391284), (12, 1793463), (14, 1537254), (18, 1195642), (21, 1024836), (28, 768627), (36, 597821), (41, 524916), (42, 512418), (63, 341612), (82, 262458), (84, 256209), (123, 174972), (126, 170806), (164, 131229), (246, 87486), (252, 85403), (287, 74988), (369, 58324), (492, 43743), (574, 37494), (738, 29162), (861, 24996), (1148, 18747), (1476, 14581), (1722, 12498), (2083, 10332), (2583, 8332), (3444, 6249), (4166, 5166)]