20309115

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 35659008

約数和(自身を除く): 15349893

約数列:

[1, 3, 5, 15, 23, 37, 43, 69, 111, 115, 129, 185, 215, 345, 555, 645, 851, 989, 1369, 1591, 2553, 2967, 4107, 4255, 4773, 4945, 6845, 7955, 12765, 14835, 20535, 23865, 31487, 36593, 58867, 94461, 109779, 157435, 176601, 182965, 294335, 472305, 548895, 883005, 1353941, 4061823, 6769705, 20309115]

約数ペア:

[(1, 20309115), (3, 6769705), (5, 4061823), (15, 1353941), (23, 883005), (37, 548895), (43, 472305), (69, 294335), (111, 182965), (115, 176601), (129, 157435), (185, 109779), (215, 94461), (345, 58867), (555, 36593), (645, 31487), (851, 23865), (989, 20535), (1369, 14835), (1591, 12765), (2553, 7955), (2967, 6845), (4107, 4945), (4255, 4773)]