19430480

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2729}}^1$

素因数の和:2831

約数の個数: 40

約数和(自身を含む): 45700200

約数和(自身を除く): 26269720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2729, 3560, 5458, 7120, 10916, 13645, 21832, 27290, 43664, 54580, 109160, 218320, 242881, 485762, 971524, 1214405, 1943048, 2428810, 3886096, 4857620, 9715240, 19430480]

約数ペア:

[(1, 19430480), (2, 9715240), (4, 4857620), (5, 3886096), (8, 2428810), (10, 1943048), (16, 1214405), (20, 971524), (40, 485762), (80, 242881), (89, 218320), (178, 109160), (356, 54580), (445, 43664), (712, 27290), (890, 21832), (1424, 13645), (1780, 10916), (2729, 7120), (3560, 5458)]