2018944880

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{39371}}^1$

素因数の和:40025

約数の個数: 40

約数和(自身を含む): 4701489264

約数和(自身を除く): 2682544384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 2564, 3205, 5128, 6410, 10256, 12820, 25640, 39371, 51280, 78742, 157484, 196855, 314968, 393710, 629936, 787420, 1574840, 3149680, 25236811, 50473622, 100947244, 126184055, 201894488, 252368110, 403788976, 504736220, 1009472440, 2018944880]

約数ペア:

[(1, 2018944880), (2, 1009472440), (4, 504736220), (5, 403788976), (8, 252368110), (10, 201894488), (16, 126184055), (20, 100947244), (40, 50473622), (80, 25236811), (641, 3149680), (1282, 1574840), (2564, 787420), (3205, 629936), (5128, 393710), (6410, 314968), (10256, 196855), (12820, 157484), (25640, 78742), (39371, 51280)]