128781720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{357727}}^1$

素因数の和:357744

約数の個数: 48

約数和(自身を含む): 418541760

約数和(自身を除く): 289760040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 357727, 715454, 1073181, 1430908, 1788635, 2146362, 2861816, 3219543, 3577270, 4292724, 5365905, 6439086, 7154540, 8585448, 10731810, 12878172, 14309080, 16097715, 21463620, 25756344, 32195430, 42927240, 64390860, 128781720]

約数ペア:

[(1, 128781720), (2, 64390860), (3, 42927240), (4, 32195430), (5, 25756344), (6, 21463620), (8, 16097715), (9, 14309080), (10, 12878172), (12, 10731810), (15, 8585448), (18, 7154540), (20, 6439086), (24, 5365905), (30, 4292724), (36, 3577270), (40, 3219543), (45, 2861816), (60, 2146362), (72, 1788635), (90, 1430908), (120, 1073181), (180, 715454), (360, 357727)]