21038928

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:129

約数の個数: 160

約数和(自身を含む): 64281600

約数和(自身を除く): 43242672

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 19, 23, 24, 34, 38, 46, 48, 51, 57, 59, 68, 69, 76, 92, 102, 114, 118, 136, 138, 152, 177, 184, 204, 228, 236, 272, 276, 304, 323, 354, 368, 391, 408, 437, 456, 472, 552, 646, 708, 782, 816, 874, 912, 944, 969, 1003, 1104, 1121, 1173, 1292, 1311, 1357, 1416, 1564, 1748, 1938, 2006, 2242, 2346, 2584, 2622, 2714, 2832, 3009, 3128, 3363, 3496, 3876, 4012, 4071, 4484, 4692, 5168, 5244, 5428, 6018, 6256, 6726, 6992, 7429, 7752, 8024, 8142, 8968, 9384, 10488, 10856, 12036, 13452, 14858, 15504, 16048, 16284, 17936, 18768, 19057, 20976, 21712, 22287, 23069, 24072, 25783, 26904, 29716, 32568, 38114, 44574, 46138, 48144, 51566, 53808, 57171, 59432, 65136, 69207, 76228, 77349, 89148, 92276, 103132, 114342, 118864, 138414, 152456, 154698, 178296, 184552, 206264, 228684, 276828, 304912, 309396, 356592, 369104, 412528, 438311, 457368, 553656, 618792, 876622, 914736, 1107312, 1237584, 1314933, 1753244, 2629866, 3506488, 5259732, 7012976, 10519464, 21038928]

約数ペア:

[(1, 21038928), (2, 10519464), (3, 7012976), (4, 5259732), (6, 3506488), (8, 2629866), (12, 1753244), (16, 1314933), (17, 1237584), (19, 1107312), (23, 914736), (24, 876622), (34, 618792), (38, 553656), (46, 457368), (48, 438311), (51, 412528), (57, 369104), (59, 356592), (68, 309396), (69, 304912), (76, 276828), (92, 228684), (102, 206264), (114, 184552), (118, 178296), (136, 154698), (138, 152456), (152, 138414), (177, 118864), (184, 114342), (204, 103132), (228, 92276), (236, 89148), (272, 77349), (276, 76228), (304, 69207), (323, 65136), (354, 59432), (368, 57171), (391, 53808), (408, 51566), (437, 48144), (456, 46138), (472, 44574), (552, 38114), (646, 32568), (708, 29716), (782, 26904), (816, 25783), (874, 24072), (912, 23069), (944, 22287), (969, 21712), (1003, 20976), (1104, 19057), (1121, 18768), (1173, 17936), (1292, 16284), (1311, 16048), (1357, 15504), (1416, 14858), (1564, 13452), (1748, 12036), (1938, 10856), (2006, 10488), (2242, 9384), (2346, 8968), (2584, 8142), (2622, 8024), (2714, 7752), (2832, 7429), (3009, 6992), (3128, 6726), (3363, 6256), (3496, 6018), (3876, 5428), (4012, 5244), (4071, 5168), (4484, 4692)]