1277379620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{65239}}^1$

素因数の和:65348

約数の個数: 48

約数和(自身を含む): 2959286400

約数和(自身を除く): 1681906780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4895, 9790, 19580, 65239, 130478, 260956, 326195, 652390, 717629, 1304780, 1435258, 2870516, 3588145, 5806271, 7176290, 11612542, 14352580, 23225084, 29031355, 58062710, 63868981, 116125420, 127737962, 255475924, 319344905, 638689810, 1277379620]

約数ペア:

[(1, 1277379620), (2, 638689810), (4, 319344905), (5, 255475924), (10, 127737962), (11, 116125420), (20, 63868981), (22, 58062710), (44, 29031355), (55, 23225084), (89, 14352580), (110, 11612542), (178, 7176290), (220, 5806271), (356, 3588145), (445, 2870516), (890, 1435258), (979, 1304780), (1780, 717629), (1958, 652390), (3916, 326195), (4895, 260956), (9790, 130478), (19580, 65239)]