19492720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18743}}^1$

素因数の和:18769

約数の個数: 40

約数和(自身を含む): 48809376

約数和(自身を除く): 29316656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18743, 37486, 74972, 93715, 149944, 187430, 243659, 299888, 374860, 487318, 749720, 974636, 1218295, 1499440, 1949272, 2436590, 3898544, 4873180, 9746360, 19492720]

約数ペア:

[(1, 19492720), (2, 9746360), (4, 4873180), (5, 3898544), (8, 2436590), (10, 1949272), (13, 1499440), (16, 1218295), (20, 974636), (26, 749720), (40, 487318), (52, 374860), (65, 299888), (80, 243659), (104, 187430), (130, 149944), (208, 93715), (260, 74972), (520, 37486), (1040, 18743)]