21010374

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 60456960

約数和(自身を除く): 39446586

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 27, 31, 33, 42, 54, 62, 63, 66, 77, 93, 99, 126, 154, 163, 186, 189, 198, 217, 231, 279, 297, 326, 341, 378, 434, 462, 489, 558, 594, 651, 682, 693, 837, 978, 1023, 1141, 1302, 1386, 1467, 1674, 1793, 1953, 2046, 2079, 2282, 2387, 2934, 3069, 3423, 3586, 3906, 4158, 4401, 4774, 5053, 5379, 5859, 6138, 6846, 7161, 8802, 9207, 10106, 10269, 10758, 11718, 12551, 14322, 15159, 16137, 18414, 20538, 21483, 25102, 30318, 30807, 32274, 35371, 37653, 42966, 45477, 48411, 55583, 61614, 64449, 70742, 75306, 90954, 96822, 106113, 111166, 112959, 128898, 136431, 166749, 212226, 225918, 272862, 318339, 333498, 338877, 389081, 500247, 636678, 677754, 778162, 955017, 1000494, 1167243, 1500741, 1910034, 2334486, 3001482, 3501729, 7003458, 10505187, 21010374]

約数ペア:

[(1, 21010374), (2, 10505187), (3, 7003458), (6, 3501729), (7, 3001482), (9, 2334486), (11, 1910034), (14, 1500741), (18, 1167243), (21, 1000494), (22, 955017), (27, 778162), (31, 677754), (33, 636678), (42, 500247), (54, 389081), (62, 338877), (63, 333498), (66, 318339), (77, 272862), (93, 225918), (99, 212226), (126, 166749), (154, 136431), (163, 128898), (186, 112959), (189, 111166), (198, 106113), (217, 96822), (231, 90954), (279, 75306), (297, 70742), (326, 64449), (341, 61614), (378, 55583), (434, 48411), (462, 45477), (489, 42966), (558, 37653), (594, 35371), (651, 32274), (682, 30807), (693, 30318), (837, 25102), (978, 21483), (1023, 20538), (1141, 18414), (1302, 16137), (1386, 15159), (1467, 14322), (1674, 12551), (1793, 11718), (1953, 10758), (2046, 10269), (2079, 10106), (2282, 9207), (2387, 8802), (2934, 7161), (3069, 6846), (3423, 6138), (3586, 5859), (3906, 5379), (4158, 5053), (4401, 4774)]