20953378

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:234

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 12794462

約数列:

[1, 2, 41, 59, 61, 71, 82, 118, 122, 142, 2419, 2501, 2911, 3599, 4189, 4331, 4838, 5002, 5822, 7198, 8378, 8662, 147559, 171749, 177571, 255529, 295118, 343498, 355142, 511058, 10476689, 20953378]

約数ペア:

[(1, 20953378), (2, 10476689), (41, 511058), (59, 355142), (61, 343498), (71, 295118), (82, 255529), (118, 177571), (122, 171749), (142, 147559), (2419, 8662), (2501, 8378), (2911, 7198), (3599, 5822), (4189, 5002), (4331, 4838)]