1331720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{197}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 3261060

約数和(自身を除く): 1929340

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 197, 260, 338, 394, 520, 676, 788, 845, 985, 1352, 1576, 1690, 1970, 2561, 3380, 3940, 5122, 6760, 7880, 10244, 12805, 20488, 25610, 33293, 51220, 66586, 102440, 133172, 166465, 266344, 332930, 665860, 1331720]

約数ペア:

[(1, 1331720), (2, 665860), (4, 332930), (5, 266344), (8, 166465), (10, 133172), (13, 102440), (20, 66586), (26, 51220), (40, 33293), (52, 25610), (65, 20488), (104, 12805), (130, 10244), (169, 7880), (197, 6760), (260, 5122), (338, 3940), (394, 3380), (520, 2561), (676, 1970), (788, 1690), (845, 1576), (985, 1352)]