21098748748

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{40751}}^1$

素因数の和:40855

約数の個数: 72

約数和(自身を含む): 47184947712

約数和(自身を除く): 26086198964

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 77, 82, 154, 164, 287, 308, 451, 574, 902, 1148, 1681, 1804, 3157, 3362, 6314, 6724, 11767, 12628, 18491, 23534, 36982, 40751, 47068, 73964, 81502, 129437, 163004, 258874, 285257, 448261, 517748, 570514, 896522, 1141028, 1670791, 1793044, 3137827, 3341582, 6275654, 6683164, 11695537, 12551308, 18378701, 23391074, 36757402, 46782148, 68502431, 73514804, 128650907, 137004862, 257301814, 274009724, 479517017, 514603628, 753526741, 959034034, 1507053482, 1918068068, 3014106964, 5274687187, 10549374374, 21098748748]

約数ペア:

[(1, 21098748748), (2, 10549374374), (4, 5274687187), (7, 3014106964), (11, 1918068068), (14, 1507053482), (22, 959034034), (28, 753526741), (41, 514603628), (44, 479517017), (77, 274009724), (82, 257301814), (154, 137004862), (164, 128650907), (287, 73514804), (308, 68502431), (451, 46782148), (574, 36757402), (902, 23391074), (1148, 18378701), (1681, 12551308), (1804, 11695537), (3157, 6683164), (3362, 6275654), (6314, 3341582), (6724, 3137827), (11767, 1793044), (12628, 1670791), (18491, 1141028), (23534, 896522), (36982, 570514), (40751, 517748), (47068, 448261), (73964, 285257), (81502, 258874), (129437, 163004)]