21209654403

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{661}}^1\times {\mathrm{6977}}^1$

素因数の和:7724

約数の個数: 48

約数和(自身を含む): 35551179456

約数和(自身を除く): 14341525053

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 661, 1533, 1983, 4599, 4627, 5949, 6977, 13881, 20931, 41643, 48253, 48839, 62793, 144759, 146517, 337771, 434277, 439551, 509321, 1013313, 1527963, 3039939, 3565247, 4583889, 4611797, 10695741, 13835391, 32087223, 32282579, 41506173, 96847737, 290543211, 336661181, 1009983543, 2356628267, 3029950629, 7069884801, 21209654403]

約数ペア:

[(1, 21209654403), (3, 7069884801), (7, 3029950629), (9, 2356628267), (21, 1009983543), (63, 336661181), (73, 290543211), (219, 96847737), (511, 41506173), (657, 32282579), (661, 32087223), (1533, 13835391), (1983, 10695741), (4599, 4611797), (4627, 4583889), (5949, 3565247), (6977, 3039939), (13881, 1527963), (20931, 1013313), (41643, 509321), (48253, 439551), (48839, 434277), (62793, 337771), (144759, 146517)]