20289990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1823}}^1$

素因数の和:1893

約数の個数: 64

約数和(自身を含む): 56733696

約数和(自身を除く): 36443706

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 53, 70, 105, 106, 159, 210, 265, 318, 371, 530, 742, 795, 1113, 1590, 1823, 1855, 2226, 3646, 3710, 5469, 5565, 9115, 10938, 11130, 12761, 18230, 25522, 27345, 38283, 54690, 63805, 76566, 96619, 127610, 191415, 193238, 289857, 382830, 483095, 579714, 676333, 966190, 1352666, 1449285, 2028999, 2898570, 3381665, 4057998, 6763330, 10144995, 20289990]

約数ペア:

[(1, 20289990), (2, 10144995), (3, 6763330), (5, 4057998), (6, 3381665), (7, 2898570), (10, 2028999), (14, 1449285), (15, 1352666), (21, 966190), (30, 676333), (35, 579714), (42, 483095), (53, 382830), (70, 289857), (105, 193238), (106, 191415), (159, 127610), (210, 96619), (265, 76566), (318, 63805), (371, 54690), (530, 38283), (742, 27345), (795, 25522), (1113, 18230), (1590, 12761), (1823, 11130), (1855, 10938), (2226, 9115), (3646, 5565), (3710, 5469)]