19455280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1439}}^1$

素因数の和:1478

約数の個数: 60

約数和(自身を含む): 49014720

約数和(自身を除く): 29559440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1439, 1690, 2704, 2878, 3380, 5756, 6760, 7195, 11512, 13520, 14390, 18707, 23024, 28780, 37414, 57560, 74828, 93535, 115120, 149656, 187070, 243191, 299312, 374140, 486382, 748280, 972764, 1215955, 1496560, 1945528, 2431910, 3891056, 4863820, 9727640, 19455280]

約数ペア:

[(1, 19455280), (2, 9727640), (4, 4863820), (5, 3891056), (8, 2431910), (10, 1945528), (13, 1496560), (16, 1215955), (20, 972764), (26, 748280), (40, 486382), (52, 374140), (65, 299312), (80, 243191), (104, 187070), (130, 149656), (169, 115120), (208, 93535), (260, 74828), (338, 57560), (520, 37414), (676, 28780), (845, 23024), (1040, 18707), (1352, 14390), (1439, 13520), (1690, 11512), (2704, 7195), (2878, 6760), (3380, 5756)]