387787240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{108929}}^1$

素因数の和:109029

約数の個数: 32

約数和(自身を含む): 882333000

約数和(自身を除く): 494545760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 108929, 217858, 435716, 544645, 871432, 1089290, 2178580, 4357160, 9694681, 19389362, 38778724, 48473405, 77557448, 96946810, 193893620, 387787240]

約数ペア:

[(1, 387787240), (2, 193893620), (4, 96946810), (5, 77557448), (8, 48473405), (10, 38778724), (20, 19389362), (40, 9694681), (89, 4357160), (178, 2178580), (356, 1089290), (445, 871432), (712, 544645), (890, 435716), (1780, 217858), (3560, 108929)]