20477835

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 42574896

約数和(自身を除く): 22097061

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 37, 45, 49, 63, 105, 111, 147, 185, 245, 251, 259, 315, 333, 441, 555, 735, 753, 777, 1255, 1295, 1665, 1757, 1813, 2205, 2259, 2331, 3765, 3885, 5271, 5439, 8785, 9065, 9287, 11295, 11655, 12299, 15813, 16317, 26355, 27195, 27861, 36897, 46435, 61495, 65009, 79065, 81585, 83583, 110691, 139305, 184485, 195027, 325045, 417915, 455063, 553455, 585081, 975135, 1365189, 2275315, 2925405, 4095567, 6825945, 20477835]

約数ペア:

[(1, 20477835), (3, 6825945), (5, 4095567), (7, 2925405), (9, 2275315), (15, 1365189), (21, 975135), (35, 585081), (37, 553455), (45, 455063), (49, 417915), (63, 325045), (105, 195027), (111, 184485), (147, 139305), (185, 110691), (245, 83583), (251, 81585), (259, 79065), (315, 65009), (333, 61495), (441, 46435), (555, 36897), (735, 27861), (753, 27195), (777, 26355), (1255, 16317), (1295, 15813), (1665, 12299), (1757, 11655), (1813, 11295), (2205, 9287), (2259, 9065), (2331, 8785), (3765, 5439), (3885, 5271)]