20589440

素因数分解:

$2^7\times 5^1\times {\mathrm{53}}^1\times {\mathrm{607}}^1$

素因数の和:679

約数の個数: 64

約数和(自身を含む): 50232960

約数和(自身を除く): 29643520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 265, 320, 424, 530, 607, 640, 848, 1060, 1214, 1696, 2120, 2428, 3035, 3392, 4240, 4856, 6070, 6784, 8480, 9712, 12140, 16960, 19424, 24280, 32171, 33920, 38848, 48560, 64342, 77696, 97120, 128684, 160855, 194240, 257368, 321710, 388480, 514736, 643420, 1029472, 1286840, 2058944, 2573680, 4117888, 5147360, 10294720, 20589440]

約数ペア:

[(1, 20589440), (2, 10294720), (4, 5147360), (5, 4117888), (8, 2573680), (10, 2058944), (16, 1286840), (20, 1029472), (32, 643420), (40, 514736), (53, 388480), (64, 321710), (80, 257368), (106, 194240), (128, 160855), (160, 128684), (212, 97120), (265, 77696), (320, 64342), (424, 48560), (530, 38848), (607, 33920), (640, 32171), (848, 24280), (1060, 19424), (1214, 16960), (1696, 12140), (2120, 9712), (2428, 8480), (3035, 6784), (3392, 6070), (4240, 4856)]