81975060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1693}}^1$

素因数の和:1977

約数の個数: 72

約数和(自身を含む): 249729480

約数和(自身を除く): 167754420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 269, 538, 807, 1076, 1345, 1614, 1693, 2421, 2690, 3228, 3386, 4035, 4842, 5079, 5380, 6772, 8070, 8465, 9684, 10158, 12105, 15237, 16140, 16930, 20316, 24210, 25395, 30474, 33860, 48420, 50790, 60948, 76185, 101580, 152370, 304740, 455417, 910834, 1366251, 1821668, 2277085, 2732502, 4098753, 4554170, 5465004, 6831255, 8197506, 9108340, 13662510, 16395012, 20493765, 27325020, 40987530, 81975060]

約数ペア:

[(1, 81975060), (2, 40987530), (3, 27325020), (4, 20493765), (5, 16395012), (6, 13662510), (9, 9108340), (10, 8197506), (12, 6831255), (15, 5465004), (18, 4554170), (20, 4098753), (30, 2732502), (36, 2277085), (45, 1821668), (60, 1366251), (90, 910834), (180, 455417), (269, 304740), (538, 152370), (807, 101580), (1076, 76185), (1345, 60948), (1614, 50790), (1693, 48420), (2421, 33860), (2690, 30474), (3228, 25395), (3386, 24210), (4035, 20316), (4842, 16930), (5079, 16140), (5380, 15237), (6772, 12105), (8070, 10158), (8465, 9684)]