21505704

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^2$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 61840800

約数和(自身を除く): 40335096

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 29, 33, 44, 53, 58, 66, 87, 88, 106, 116, 132, 159, 174, 212, 232, 264, 318, 319, 348, 424, 583, 636, 638, 696, 957, 1166, 1272, 1276, 1537, 1749, 1914, 2332, 2552, 2809, 3074, 3498, 3828, 4611, 4664, 5618, 6148, 6996, 7656, 8427, 9222, 11236, 12296, 13992, 16854, 16907, 18444, 22472, 30899, 33708, 33814, 36888, 50721, 61798, 67416, 67628, 81461, 92697, 101442, 123596, 135256, 162922, 185394, 202884, 244383, 247192, 325844, 370788, 405768, 488766, 651688, 741576, 896071, 977532, 1792142, 1955064, 2688213, 3584284, 5376426, 7168568, 10752852, 21505704]

約数ペア:

[(1, 21505704), (2, 10752852), (3, 7168568), (4, 5376426), (6, 3584284), (8, 2688213), (11, 1955064), (12, 1792142), (22, 977532), (24, 896071), (29, 741576), (33, 651688), (44, 488766), (53, 405768), (58, 370788), (66, 325844), (87, 247192), (88, 244383), (106, 202884), (116, 185394), (132, 162922), (159, 135256), (174, 123596), (212, 101442), (232, 92697), (264, 81461), (318, 67628), (319, 67416), (348, 61798), (424, 50721), (583, 36888), (636, 33814), (638, 33708), (696, 30899), (957, 22472), (1166, 18444), (1272, 16907), (1276, 16854), (1537, 13992), (1749, 12296), (1914, 11236), (2332, 9222), (2552, 8427), (2809, 7656), (3074, 6996), (3498, 6148), (3828, 5618), (4611, 4664)]