19940349

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{877}}^1$

素因数の和:957

約数の個数: 32

約数和(自身を含む): 31860864

約数和(自身を除く): 11920515

約数列:

[1, 3, 11, 13, 33, 39, 53, 143, 159, 429, 583, 689, 877, 1749, 2067, 2631, 7579, 9647, 11401, 22737, 28941, 34203, 46481, 125411, 139443, 376233, 511291, 604253, 1533873, 1812759, 6646783, 19940349]

約数ペア:

[(1, 19940349), (3, 6646783), (11, 1812759), (13, 1533873), (33, 604253), (39, 511291), (53, 376233), (143, 139443), (159, 125411), (429, 46481), (583, 34203), (689, 28941), (877, 22737), (1749, 11401), (2067, 9647), (2631, 7579)]