19111820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10501}}^1$

素因数の和:10530

約数の個数: 48

約数和(自身を含む): 49401408

約数和(自身を除く): 30289588

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10501, 21002, 42004, 52505, 73507, 105010, 136513, 147014, 210020, 273026, 294028, 367535, 546052, 682565, 735070, 955591, 1365130, 1470140, 1911182, 2730260, 3822364, 4777955, 9555910, 19111820]

約数ペア:

[(1, 19111820), (2, 9555910), (4, 4777955), (5, 3822364), (7, 2730260), (10, 1911182), (13, 1470140), (14, 1365130), (20, 955591), (26, 735070), (28, 682565), (35, 546052), (52, 367535), (65, 294028), (70, 273026), (91, 210020), (130, 147014), (140, 136513), (182, 105010), (260, 73507), (364, 52505), (455, 42004), (910, 21002), (1820, 10501)]