20197767616

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{68771}}^1$

素因数の和:69149

約数の個数: 56

約数和(自身を含む): 43285922064

約数和(自身を除く): 23088154448

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 208, 353, 416, 706, 832, 1412, 2824, 4589, 5648, 9178, 11296, 18356, 22592, 36712, 68771, 73424, 137542, 146848, 275084, 293696, 550168, 894023, 1100336, 1788046, 2200672, 3576092, 4401344, 7152184, 14304368, 24276163, 28608736, 48552326, 57217472, 97104652, 194209304, 315590119, 388418608, 631180238, 776837216, 1262360476, 1553674432, 2524720952, 5049441904, 10098883808, 20197767616]

約数ペア:

[(1, 20197767616), (2, 10098883808), (4, 5049441904), (8, 2524720952), (13, 1553674432), (16, 1262360476), (26, 776837216), (32, 631180238), (52, 388418608), (64, 315590119), (104, 194209304), (208, 97104652), (353, 57217472), (416, 48552326), (706, 28608736), (832, 24276163), (1412, 14304368), (2824, 7152184), (4589, 4401344), (5648, 3576092), (9178, 2200672), (11296, 1788046), (18356, 1100336), (22592, 894023), (36712, 550168), (68771, 293696), (73424, 275084), (137542, 146848)]