19513555225

素因数分解:

$5^2\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1\times {\mathrm{491}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 24905905920

約数和(自身を除く): 5392350695

約数列:

[1, 5, 25, 83, 107, 179, 415, 491, 535, 895, 2075, 2455, 2675, 4475, 8881, 12275, 14857, 19153, 40753, 44405, 52537, 74285, 87889, 95765, 203765, 222025, 262685, 371425, 439445, 478825, 1018825, 1313425, 1589699, 2197225, 4360571, 7294787, 7948495, 9404123, 21802855, 36473935, 39742475, 47020615, 109014275, 182369675, 235103075, 780542209, 3902711045, 19513555225]

約数ペア:

[(1, 19513555225), (5, 3902711045), (25, 780542209), (83, 235103075), (107, 182369675), (179, 109014275), (415, 47020615), (491, 39742475), (535, 36473935), (895, 21802855), (2075, 9404123), (2455, 7948495), (2675, 7294787), (4475, 4360571), (8881, 2197225), (12275, 1589699), (14857, 1313425), (19153, 1018825), (40753, 478825), (44405, 439445), (52537, 371425), (74285, 262685), (87889, 222025), (95765, 203765)]