20492955

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 41243904

約数和(自身を除く): 20750949

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 67, 105, 201, 315, 335, 469, 603, 971, 1005, 1407, 2345, 2913, 3015, 4221, 4855, 6797, 7035, 8739, 14565, 20391, 21105, 33985, 43695, 61173, 65057, 101955, 195171, 305865, 325285, 455399, 585513, 975855, 1366197, 2276995, 2927565, 4098591, 6830985, 20492955]

約数ペア:

[(1, 20492955), (3, 6830985), (5, 4098591), (7, 2927565), (9, 2276995), (15, 1366197), (21, 975855), (35, 585513), (45, 455399), (63, 325285), (67, 305865), (105, 195171), (201, 101955), (315, 65057), (335, 61173), (469, 43695), (603, 33985), (971, 21105), (1005, 20391), (1407, 14565), (2345, 8739), (2913, 7035), (3015, 6797), (4221, 4855)]