18764515

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 30855168

約数和(自身を除く): 12090653

約数列:

[1, 5, 7, 11, 17, 35, 47, 55, 61, 77, 85, 119, 187, 235, 305, 329, 385, 427, 517, 595, 671, 799, 935, 1037, 1309, 1645, 2135, 2585, 2867, 3355, 3619, 3995, 4697, 5185, 5593, 6545, 7259, 8789, 11407, 14335, 18095, 20069, 23485, 27965, 31537, 36295, 43945, 48739, 57035, 61523, 79849, 100345, 157685, 220759, 243695, 307615, 341173, 399245, 536129, 1103795, 1705865, 2680645, 3752903, 18764515]

約数ペア:

[(1, 18764515), (5, 3752903), (7, 2680645), (11, 1705865), (17, 1103795), (35, 536129), (47, 399245), (55, 341173), (61, 307615), (77, 243695), (85, 220759), (119, 157685), (187, 100345), (235, 79849), (305, 61523), (329, 57035), (385, 48739), (427, 43945), (517, 36295), (595, 31537), (671, 27965), (799, 23485), (935, 20069), (1037, 18095), (1309, 14335), (1645, 11407), (2135, 8789), (2585, 7259), (2867, 6545), (3355, 5593), (3619, 5185), (3995, 4697)]