19689215

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 29420160

約数和(自身を除く): 9730945

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 397, 455, 545, 763, 1417, 1985, 2779, 3815, 5161, 7085, 9919, 13895, 25805, 36127, 43273, 49595, 180635, 216365, 302911, 562549, 1514555, 2812745, 3937843, 19689215]

約数ペア:

[(1, 19689215), (5, 3937843), (7, 2812745), (13, 1514555), (35, 562549), (65, 302911), (91, 216365), (109, 180635), (397, 49595), (455, 43273), (545, 36127), (763, 25805), (1417, 13895), (1985, 9919), (2779, 7085), (3815, 5161)]