21386295

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 96

約数和(自身を含む): 45800640

約数和(自身を除く): 24414345

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 53, 61, 63, 105, 135, 147, 159, 183, 189, 245, 265, 305, 315, 371, 427, 441, 477, 549, 735, 795, 915, 945, 1113, 1281, 1323, 1431, 1647, 1855, 2135, 2205, 2385, 2597, 2745, 2989, 3233, 3339, 3843, 5565, 6405, 6615, 7155, 7791, 8235, 8967, 9699, 10017, 11529, 12985, 14945, 16165, 16695, 19215, 22631, 23373, 26901, 29097, 38955, 44835, 48495, 50085, 57645, 67893, 70119, 80703, 87291, 113155, 116865, 134505, 145485, 158417, 203679, 339465, 350595, 403515, 436455, 475251, 611037, 792085, 1018395, 1425753, 2376255, 3055185, 4277259, 7128765, 21386295]

約数ペア:

[(1, 21386295), (3, 7128765), (5, 4277259), (7, 3055185), (9, 2376255), (15, 1425753), (21, 1018395), (27, 792085), (35, 611037), (45, 475251), (49, 436455), (53, 403515), (61, 350595), (63, 339465), (105, 203679), (135, 158417), (147, 145485), (159, 134505), (183, 116865), (189, 113155), (245, 87291), (265, 80703), (305, 70119), (315, 67893), (371, 57645), (427, 50085), (441, 48495), (477, 44835), (549, 38955), (735, 29097), (795, 26901), (915, 23373), (945, 22631), (1113, 19215), (1281, 16695), (1323, 16165), (1431, 14945), (1647, 12985), (1855, 11529), (2135, 10017), (2205, 9699), (2385, 8967), (2597, 8235), (2745, 7791), (2989, 7155), (3233, 6615), (3339, 6405), (3843, 5565)]